subject:( Underground mines)

University of Arizona

1. Lazaro Trujillo, Lucero. Heat Stress in Hot Underground Mines .

Degree: 2020, University of Arizona

URL: http://hdl.handle.net/10150/642097

► This dissertation is focused on the assessment and prevention of heat-related illnesses in mineworkers due to excessive exposure to heat and humidity in hot environments.… (more)

Subjects/Keywords: Heat Stress; Underground mines

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APA (6^th Edition):

Lazaro Trujillo, L. (2020). Heat Stress in Hot Underground Mines . (Doctoral Dissertation). University of Arizona. Retrieved from http://hdl.handle.net/10150/642097

Chicago Manual of Style (16^th Edition):

Lazaro Trujillo, Lucero. “Heat Stress in Hot Underground Mines .” 2020. Doctoral Dissertation, University of Arizona. Accessed April 10, 2021. http://hdl.handle.net/10150/642097.

MLA Handbook (7^th Edition):

Lazaro Trujillo, Lucero. “Heat Stress in Hot Underground Mines .” 2020. Web. 10 Apr 2021.

Vancouver:

Lazaro Trujillo L. Heat Stress in Hot Underground Mines . [Internet] [Doctoral dissertation]. University of Arizona; 2020. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/10150/642097.

Council of Science Editors:

Lazaro Trujillo L. Heat Stress in Hot Underground Mines . [Doctoral Dissertation]. University of Arizona; 2020. Available from: http://hdl.handle.net/10150/642097

Curtin University of Technology

2. Donoghue, Alan M. Acute heat illness in underground miners : the clinical state, haematology, biochemistry and risk factors.

Degree: 2000, Curtin University of Technology

URL: http://hdl.handle.net/20.500.11937/2196

► Objectives - To examine the incidence, clinical state, personal risk factors, haematology and biochemistry of heat exhaustion cases occurring at a deep underground metalliferous mine.… (more)

▼ Objectives - To examine the incidence, clinical state, personal risk factors, haematology and biochemistry of heat exhaustion cases occurring at a deep underground metalliferous mine. To describe the underground and surface thermal conditions associated with the occurrence of heat exhaustion cases.Methods - A one-year prospective case-series of acute heat exhaustion cases was undertaken at a deep underground metalliferous mine in tropical and Australia. A case-control study of body mass index (BMI) and maximal oxygen uptake (VO(subscript)2max) in heat exhaustion was also undertaken. A history was obtained using a structured questionnaire. Pulse rate, blood pressure, tympanic temperature and urine specific gravity were measured before treatment. Venous blood was analysed for haematological and biochemical parameters, during the acute presentation and after recovery. BMI and VO(subscript)2max were measured after recovery and in a group of controls. Psychrometric wet bulb temperature, dry bulb temperature and air velocity were measured at the underground sites where heat exhaustion had occurred. Air cooling power and psychrometric wet bulb globe temperatures were derived. Surface 24-hour mean wet bulb and dry bulb temperatures were recorded. Surface 24-hour mean wet bulb globe temperatures were derived.Results - 106 cases were studied in the case series. The incidence of heat exhaustion during the year was 43.0 cases per million man-hours. In February it was 147 cases per million man-hours. The incidence rate ratio for mines operating below 1200m compared to those operating above 1200m was 3.17. Mean estimated fluid intake was 0.64 litres/hour (SD 0.29, Range 0.08-1.50).The following were raised on acute presentation compared to recovery (P value, % of acute cases above the normal clinical range): neutrophils (P<0.001, 36%), anion gap (P<0.001, 63%), urea (P<0.001, 21%), creatinine (P<0.001, 30%), glucose (P<0.001, 15%), serum osmolality (P=0.030, 71%), creatine kinase (P=0.002, 45%), aspartate transaminase (P<0.001, 14%), lactate dehydrogenase (P<0.001, 9.5%), and ferritin (P<0.001, 26%). The following were depressed on acute presentation compared to recovery (P value, % of acute cases below the normal clinical range): eosinophils (P=0.003, 3 8%) and bicarbonate (P=0.0 11, 32%). Urea and creatinine were significantly raised in miners with heat cramps compared to miners without this symptom (P<0.001), while there was no significant difference in sodium concentration (P=0.384).Mean psychrometric wet bulb temperature was 29.0 degrees celsius (SD 2.2, Range 21.0-34.0). Mean dry bulb temperature was 37.4 degrees celsius (SD 2.4, Range 31.0-43.0). Mean air velocity was 0.54 m/s (SD 0.57, Range 0.00-4.00). Mean air cooling power was 148 W/m(subscript)2 (SD 49, Range 33-290). Mean psychrometric wet bulb globe temperature was 31.5 degrees celsius (SD 2.0, Range 25.2-35.3). Few cases (<5%) occurred at a psychrometric wet bulb temperature <25.0'C, dry bulb temperature <33.8'C, air velocity >1.56 m/s, air cooling power >248…

Subjects/Keywords: underground mines; heat exhaustion; underground miners

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APA (6^th Edition):

Donoghue, A. M. (2000). Acute heat illness in underground miners : the clinical state, haematology, biochemistry and risk factors. (Thesis). Curtin University of Technology. Retrieved from http://hdl.handle.net/20.500.11937/2196

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Donoghue, Alan M. “Acute heat illness in underground miners : the clinical state, haematology, biochemistry and risk factors. ” 2000. Thesis, Curtin University of Technology. Accessed April 10, 2021. http://hdl.handle.net/20.500.11937/2196.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Donoghue, Alan M. “Acute heat illness in underground miners : the clinical state, haematology, biochemistry and risk factors. ” 2000. Web. 10 Apr 2021.

Vancouver:

Donoghue AM. Acute heat illness in underground miners : the clinical state, haematology, biochemistry and risk factors. [Internet] [Thesis]. Curtin University of Technology; 2000. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/20.500.11937/2196.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Donoghue AM. Acute heat illness in underground miners : the clinical state, haematology, biochemistry and risk factors. [Thesis]. Curtin University of Technology; 2000. Available from: http://hdl.handle.net/20.500.11937/2196

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Pretoria

3. Geldenhuys, Genna-Leigh. Characterization of diesel emissions with respect to semi-volatile organic compounds in South African platinum mines and other confined environments.

Degree: MSc, Chemistry, 2014, University of Pretoria

URL: http://hdl.handle.net/2263/46248

► Concentrations of diesel particulate matter (DPM) and polycyclic aromatic hydrocarbons (PAHs) in platinum mine environments are likely to be higher than in ambient air due… (more)

Subjects/Keywords: UCTD; Denuder; Underground Platinum mines; Diesel Particulate Matter; Diesel exhaust emissions

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APA (6^th Edition):

Geldenhuys, G. (2014). Characterization of diesel emissions with respect to semi-volatile organic compounds in South African platinum mines and other confined environments. (Masters Thesis). University of Pretoria. Retrieved from http://hdl.handle.net/2263/46248

Chicago Manual of Style (16^th Edition):

Geldenhuys, Genna-Leigh. “Characterization of diesel emissions with respect to semi-volatile organic compounds in South African platinum mines and other confined environments.” 2014. Masters Thesis, University of Pretoria. Accessed April 10, 2021. http://hdl.handle.net/2263/46248.

MLA Handbook (7^th Edition):

Geldenhuys, Genna-Leigh. “Characterization of diesel emissions with respect to semi-volatile organic compounds in South African platinum mines and other confined environments.” 2014. Web. 10 Apr 2021.

Vancouver:

Geldenhuys G. Characterization of diesel emissions with respect to semi-volatile organic compounds in South African platinum mines and other confined environments. [Internet] [Masters thesis]. University of Pretoria; 2014. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/2263/46248.

Council of Science Editors:

Geldenhuys G. Characterization of diesel emissions with respect to semi-volatile organic compounds in South African platinum mines and other confined environments. [Masters Thesis]. University of Pretoria; 2014. Available from: http://hdl.handle.net/2263/46248

Virginia Tech

4. Slaker, Brent Allan. Monitoring Underground Mine Displacement Using Photogrammetry and Laser Scanning.

Degree: PhD, Mining Engineering, 2015, Virginia Tech

URL: http://hdl.handle.net/10919/51691

► Photogrammetry and laser scanning are remote sensing technologies with the potential to monitor movements of rock masses and their support systems in underground mine environments.… (more)

▼ Photogrammetry and laser scanning are remote sensing technologies with the potential to monitor movements of rock masses and their support systems in underground mine environments. Displacements underground are traditionally measured through point measurement devices, such as extensometers. These are generally restricted to measuring one dimension, may change behavior with installation, may obstruct mining operations, and are restricted to monitoring the behavior of a small area. Photogrammetry and laser scanning offer the ability to monitor rock mass movements at millions of points in a local area, both accurately and quickly. An improved, or augmented, method for measuring displacements underground in a practical, cost-effective manner will lead to an improved understanding of rock mass behavior. Several experiments were performed that demonstrate the applicability of these remote sensing techniques to monitoring rock mass changes. An underground mining environment presents unique challenges to using these tools for monitoring rock movements, such as: poor lighting, dust, fog, and unfavorable geometries. It is important, therefore, to demonstrate that these tools which have applications in other industries, can also be adapted to the conditions of an underground mine. The study sites chosen include two different underground limestone mines, two different underground coal mines, and the Mine Roof Simulator (MRS) at the Pittsburgh Office of Mine Safety and Health Research. Both photogrammetry and laser scanning were tested at different limestone mines to detect scaling and spalling on ribs that occurred over several weeks. Both methods were successfully used to reconstruct three-dimensional models of the limestone ribs and detect areas of rock change between visits. By comparing the reconstructed point clouds, and the triangulated meshes created from them, volumes of rock change could be quantified. The laser scanned limestone mine showed a volume of 2.3 m3 and 2.6 m3 being displaced across two ribs between visits. The photogrammetry study involved seven different pillars and at least one rib face modeled on each, with volume changes of 0.29 to 4.03 m3 detected between visits. The rock displaced from the ribs could not be measured independently of the remote sensing, but a uniform absence of rock movement across large areas of the mine validates the accuracy of the point clouds. A similar test was performed using laser scanning in an underground coal mine, where the displacement was induced by removing material by hand from the ribs. Volume changes as small as 57 cm3, or slightly larger than a golf ball, and as large as 57,549 cm3, were detectable in this environment, despite the change in rib surface reflectance and mine geometry. In addition to the rib displacement, photogrammetry was selected as a tool for monitoring standing supports in underground coal mines. The additional regulatory restrictions of underground coal may preclude the use of laser scanning in these mines where deformation is… Advisors/Committee Members: Westman, Erik Christian (committeechair), Ripepi, Nino S. (committee member), Murphy, Michael Martin (committee member), Karfakis, Mario G. (committee member), Esterhuizen, Gabriel S. (committee member).

Subjects/Keywords: photogrammetry; laser scanning; underground mines; longwall mining; monitoring

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APA (6^th Edition):

Slaker, B. A. (2015). Monitoring Underground Mine Displacement Using Photogrammetry and Laser Scanning. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/51691

Chicago Manual of Style (16^th Edition):

Slaker, Brent Allan. “Monitoring Underground Mine Displacement Using Photogrammetry and Laser Scanning.” 2015. Doctoral Dissertation, Virginia Tech. Accessed April 10, 2021. http://hdl.handle.net/10919/51691.

MLA Handbook (7^th Edition):

Slaker, Brent Allan. “Monitoring Underground Mine Displacement Using Photogrammetry and Laser Scanning.” 2015. Web. 10 Apr 2021.

Vancouver:

Slaker BA. Monitoring Underground Mine Displacement Using Photogrammetry and Laser Scanning. [Internet] [Doctoral dissertation]. Virginia Tech; 2015. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/10919/51691.

Council of Science Editors:

Slaker BA. Monitoring Underground Mine Displacement Using Photogrammetry and Laser Scanning. [Doctoral Dissertation]. Virginia Tech; 2015. Available from: http://hdl.handle.net/10919/51691

5. Seguel González, Fabián Esteban. Robust localization system using Visible Light Communication technology for underground mines : Système robuste de localisation par lumière visible : application au domaine de l'exploitation des mines souterraines.

Degree: Docteur es, Automatique, Traitement du Signal et des Images, Génie Informatique, 2020, Université de Lorraine; Universidad de Santiago de Chile

URL: http://www.theses.fr/2020LORR0012

►

En raison des progrès des appareils électroniques et des technologies de communication, de nouvelles règles de sécurité doivent être appliquées afin d'exploiter les mines souterraines… (more)

▼

En raison des progrès des appareils électroniques et des technologies de communication, de nouvelles règles de sécurité doivent être appliquées afin d'exploiter les mines souterraines de façon sécuritaire et optimale. En 2006, le gouvernement américain a mis à jour ses politiques de sécurité et a adopté la PUBLIC LAW109-236. Cette nouvelle réglementation établit que l'emplacement actuel, ou immédiatement avant l'accident, de tout le personnel souterrain doit être livré à une station de surveillance extérieure. Malgré les récents progrès des systèmes de suivi et de positionnement pour les environnements intérieurs, les mines souterraines constituent un cadre unique, qui impose des contraintes différentes aux technologies actuelles. Au cours des dernières années, les communications par lumière visible (VLC) ont attiré l'attention des chercheurs, grâce principalement aux progrès récents dans la fabrication des diodes électroluminescentes. Le développement rapide des systèmes VLC a encouragé les chercheurs à proposer des solutions de positionnement basées sur cette technologie. Le positionnement par lumière visible (VLP) présente plusieurs avantages par rapport aux méthodes de positionnement traditionnelles. La plupart des méthodes VLP ont été évaluées dans des scénarios où un réseau VLC dense et bien déployé existe. Les mines souterraines, d'autre part, sont un environnement dynamique et intrinsèquement dangereux et la plupart des hypothèses formulées pour les environnements intérieurs traditionnels ne sont pas satisfaites. La faisabilité de l'utilisation d'un système VLP dans de telles conditions et capable de répondre aux exigences de positionnement reste une question ouverte. Afin de répondre à cette question, nous étudions les contraintes, limites et exigences des technologies actuelles lorsqu'elles sont appliquées en milieu minier souterrain afin de déterminer la meilleure architecture garantissant le service de positionnement tout en répondant aux exigences de localisation. Nous avons développé une plate-forme réelle à faible coût et à grande échelle pour évaluer les performances des méthodes de positionnement en lumière visible. Finalement, une nouvelle méthode de positionnement robuste est présentée. Contrairement à la plupart des méthodes existantes dans la littérature, notre proposition n'est pas directement dérivée des méthodes basées sur les RF. La robustesse de notre méthode à plusieurs perturbations a été testée.

Advances in electronics and communications technology have created new safety regulations that must be applied in order to operate underground mines safely and optimally. In 2006, the U.S. government updated its safety policies and adopted PUBLIC LAW109-236. As a result, monitoring of personnel inside underground tunnels is now mandatory for mining operations. This new regulation establishes that the current location, or immediately prior to the accident, of all underground personnel must be delivered to an external monitoring station. Despite recent advances in tracking and positioning systems…

Advisors/Committee Members: Charpentier, Patrick (thesis director), Krommenacker, Nicolas (thesis director), Soto, Ismael (thesis director).

Subjects/Keywords: Système de positionnement en intérieur; Communication par lumière visible; Mines souterraines; Indoor positioning; Visible light communications; Underground mines; 621.367 8

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APA (6^th Edition):

Seguel González, F. E. (2020). Robust localization system using Visible Light Communication technology for underground mines : Système robuste de localisation par lumière visible : application au domaine de l'exploitation des mines souterraines. (Doctoral Dissertation). Université de Lorraine; Universidad de Santiago de Chile. Retrieved from http://www.theses.fr/2020LORR0012

Chicago Manual of Style (16^th Edition):

Seguel González, Fabián Esteban. “Robust localization system using Visible Light Communication technology for underground mines : Système robuste de localisation par lumière visible : application au domaine de l'exploitation des mines souterraines.” 2020. Doctoral Dissertation, Université de Lorraine; Universidad de Santiago de Chile. Accessed April 10, 2021. http://www.theses.fr/2020LORR0012.

MLA Handbook (7^th Edition):

Seguel González, Fabián Esteban. “Robust localization system using Visible Light Communication technology for underground mines : Système robuste de localisation par lumière visible : application au domaine de l'exploitation des mines souterraines.” 2020. Web. 10 Apr 2021.

Vancouver:

Seguel González FE. Robust localization system using Visible Light Communication technology for underground mines : Système robuste de localisation par lumière visible : application au domaine de l'exploitation des mines souterraines. [Internet] [Doctoral dissertation]. Université de Lorraine; Universidad de Santiago de Chile; 2020. [cited 2021 Apr 10]. Available from: http://www.theses.fr/2020LORR0012.

Council of Science Editors:

Seguel González FE. Robust localization system using Visible Light Communication technology for underground mines : Système robuste de localisation par lumière visible : application au domaine de l'exploitation des mines souterraines. [Doctoral Dissertation]. Université de Lorraine; Universidad de Santiago de Chile; 2020. Available from: http://www.theses.fr/2020LORR0012

Michigan Technological University

6. Louie, Edward Peace. WRITING A COMMUNITY GUIDEBOOK FOR EVALUATING LOW-GRADE GEOTHERMAL ENERGY FROM FLOODED UNDERGROUND MINES FOR HEATING AND COOLING BUILDINGS.

Degree: MS, Department of Social Sciences, 2015, Michigan Technological University

URL: https://digitalcommons.mtu.edu/etds/922

► When underground mines close they often fill with water from ground and surface sources; each mine can contain millions to billions of gallons of… (more)

Subjects/Keywords: geothermal energy; heating and cooling; underground mines; water; Energy Policy; Environmental Policy

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APA (6^th Edition):

Louie, E. P. (2015). WRITING A COMMUNITY GUIDEBOOK FOR EVALUATING LOW-GRADE GEOTHERMAL ENERGY FROM FLOODED UNDERGROUND MINES FOR HEATING AND COOLING BUILDINGS. (Masters Thesis). Michigan Technological University. Retrieved from https://digitalcommons.mtu.edu/etds/922

Chicago Manual of Style (16^th Edition):

Louie, Edward Peace. “WRITING A COMMUNITY GUIDEBOOK FOR EVALUATING LOW-GRADE GEOTHERMAL ENERGY FROM FLOODED UNDERGROUND MINES FOR HEATING AND COOLING BUILDINGS.” 2015. Masters Thesis, Michigan Technological University. Accessed April 10, 2021. https://digitalcommons.mtu.edu/etds/922.

MLA Handbook (7^th Edition):

Louie, Edward Peace. “WRITING A COMMUNITY GUIDEBOOK FOR EVALUATING LOW-GRADE GEOTHERMAL ENERGY FROM FLOODED UNDERGROUND MINES FOR HEATING AND COOLING BUILDINGS.” 2015. Web. 10 Apr 2021.

Vancouver:

Louie EP. WRITING A COMMUNITY GUIDEBOOK FOR EVALUATING LOW-GRADE GEOTHERMAL ENERGY FROM FLOODED UNDERGROUND MINES FOR HEATING AND COOLING BUILDINGS. [Internet] [Masters thesis]. Michigan Technological University; 2015. [cited 2021 Apr 10]. Available from: https://digitalcommons.mtu.edu/etds/922.

Council of Science Editors:

Louie EP. WRITING A COMMUNITY GUIDEBOOK FOR EVALUATING LOW-GRADE GEOTHERMAL ENERGY FROM FLOODED UNDERGROUND MINES FOR HEATING AND COOLING BUILDINGS. [Masters Thesis]. Michigan Technological University; 2015. Available from: https://digitalcommons.mtu.edu/etds/922

Curtin University of Technology

7. Le Cras, Jared R. A multisensor SLAM for dense maps of large scale environments under poor lighting conditions .

Degree: 2012, Curtin University of Technology

URL: http://hdl.handle.net/20.500.11937/1041

► This thesis describes the development and implementation of a multisensor large scale autonomous mapping system for surveying tasks in underground mines. The hazardous nature of… (more)

▼ This thesis describes the development and implementation of a multisensor large scale autonomous mapping system for surveying tasks in underground mines. The hazardous nature of the underground mining industry has resulted in a push towards autonomous solutions to the most dangerous operations, including surveying tasks. Many existing autonomous mapping techniques rely on approaches to the Simultaneous Localization and Mapping (SLAM) problem which are not suited to the extreme characteristics of active underground mining environments. Our proposed multisensor system has been designed from the outset to address the unique challenges associated with underground SLAM. The robustness, self-containment and portability of the system maximize the potential applications.The multisensor mapping solution proposed as a result of this work is based on a fusion of omnidirectional bearing-only vision-based localization and 3D laser point cloud registration. By combining these two SLAM techniques it is possible to achieve some of the advantages of both approaches – the real-time attributes of vision-based SLAM and the dense, high precision maps obtained through 3D lasers. The result is a viable autonomous mapping solution suitable for application in challenging underground mining environments.A further improvement to the robustness of the proposed multisensor SLAM system is a consequence of incorporating colour information into vision-based localization. Underground mining environments are often dominated by dynamic sources of illumination which can cause inconsistent feature motion during localization. Colour information is utilized to identify and remove features resulting from illumination artefacts and to improve the monochrome based feature matching between frames.Finally, the proposed multisensor mapping system is implemented and evaluated in both above ground and underground scenarios. The resulting large scale maps contained a maximum offset error of ±30mm for mapping tasks with lengths over 100m.

Subjects/Keywords: underground mines; poor lighting conditions; dense maps; multisensor SLAM; surveying tasks; large scale environments

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APA (6^th Edition):

Le Cras, J. R. (2012). A multisensor SLAM for dense maps of large scale environments under poor lighting conditions . (Thesis). Curtin University of Technology. Retrieved from http://hdl.handle.net/20.500.11937/1041

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Le Cras, Jared R. “A multisensor SLAM for dense maps of large scale environments under poor lighting conditions .” 2012. Thesis, Curtin University of Technology. Accessed April 10, 2021. http://hdl.handle.net/20.500.11937/1041.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Le Cras, Jared R. “A multisensor SLAM for dense maps of large scale environments under poor lighting conditions .” 2012. Web. 10 Apr 2021.

Vancouver:

Le Cras JR. A multisensor SLAM for dense maps of large scale environments under poor lighting conditions . [Internet] [Thesis]. Curtin University of Technology; 2012. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/20.500.11937/1041.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Le Cras JR. A multisensor SLAM for dense maps of large scale environments under poor lighting conditions . [Thesis]. Curtin University of Technology; 2012. Available from: http://hdl.handle.net/20.500.11937/1041

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Virginia Tech

8. Jong, Edmund Chime. Development and Evaluation of a Permeation Plug Release Vessel (PPRV) for the Release of Perfluoromethylcyclohexane (PMCH) in Underground Mine Tracer Gas Studies.

Degree: PhD, Mining Engineering, 2014, Virginia Tech

URL: http://hdl.handle.net/10919/24912

► The use of sulfur hexafluoride (SF6) as a tracer gas for analyzing underground mine ventilation systems has been practiced for over 30 years. As a… (more)

Subjects/Keywords: tracer gas; PMCH; PFT; passive release; mine ventilation; underground mines; gas chromatography

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APA (6^th Edition):

Jong, E. C. (2014). Development and Evaluation of a Permeation Plug Release Vessel (PPRV) for the Release of Perfluoromethylcyclohexane (PMCH) in Underground Mine Tracer Gas Studies. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/24912

Chicago Manual of Style (16^th Edition):

Jong, Edmund Chime. “Development and Evaluation of a Permeation Plug Release Vessel (PPRV) for the Release of Perfluoromethylcyclohexane (PMCH) in Underground Mine Tracer Gas Studies.” 2014. Doctoral Dissertation, Virginia Tech. Accessed April 10, 2021. http://hdl.handle.net/10919/24912.

MLA Handbook (7^th Edition):

Jong, Edmund Chime. “Development and Evaluation of a Permeation Plug Release Vessel (PPRV) for the Release of Perfluoromethylcyclohexane (PMCH) in Underground Mine Tracer Gas Studies.” 2014. Web. 10 Apr 2021.

Vancouver:

Jong EC. Development and Evaluation of a Permeation Plug Release Vessel (PPRV) for the Release of Perfluoromethylcyclohexane (PMCH) in Underground Mine Tracer Gas Studies. [Internet] [Doctoral dissertation]. Virginia Tech; 2014. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/10919/24912.

Council of Science Editors:

Jong EC. Development and Evaluation of a Permeation Plug Release Vessel (PPRV) for the Release of Perfluoromethylcyclohexane (PMCH) in Underground Mine Tracer Gas Studies. [Doctoral Dissertation]. Virginia Tech; 2014. Available from: http://hdl.handle.net/10919/24912

Virginia Tech

9. Monsalve, Juan J. Integrating Laser Scanning with Discrete Element Modeling for Improving Safety in Underground Stone Mines.

Degree: MS, Mining Engineering, 2019, Virginia Tech

URL: http://hdl.handle.net/10919/90659

► According to the Mine Health and Safety Administration (MSHA), between 2006 and 2016, the underground stone mining industry had the highest fatality rate in 4… (more)

▼ According to the Mine Health and Safety Administration (MSHA), between 2006 and 2016, the underground stone mining industry had the highest fatality rate in 4 out of 10 years, compared to any other type of mining in the United States. Additionally, the National Institute for Occupational Safety and Health (NIOSH) stated that structurally controlled instability is one of the main causes of rock falls in underground limestone mines. This type of instability occurs when the fractures present in the rock mass intercept each other forming rock blocks that displace into the tunnel as the excavation takes place and poses a great hazard for miners. In recent years, Terrestrial laser scanning (TLS) has been used for mapping and characterizing fractures present in a rock mass. TLS is a technology that allows to generate a three-dimensional multimillion point cloud of a scanned area. In addition to this, the advances in computing power throughout the past years, have allowed simulation softwares such as the Discrete Element Model (DEM) to represent more realistically the behavior of a fractured rock mass under excavation. The aim of this work was to develop and evaluate a methodology that could complement already exisiting design guidelines that may not apply to all kind of underground mines. The presented methodology evaluates rock failure due to presence of discontinuites, through the integration of TLS with DEM and considers site specific conditions. An area of a case study mine was assessed with this methodology, where several laser scans were performed. Information extracted from this laser scans was used to simulate the response of the rock mass under excavation by running Discrete Element Numerical Models. Results from these models allowed us to estimate the probability of rock failure in the analized areas. These, rock block failure probability estimations provide engineers a tool for characterizing, preventing, and managing structurally controlled instability, and ultimately improving workers safety. Advisors/Committee Members: Ripepi, Nino S. (committeechair), Karfakis, Mario G. (committee member), Chen, Cheng (committee member), Hazzard, Jim (committee member).

Subjects/Keywords: Terrestrial Laser Scanning; Discrete Element Method; 3DEC; Discrete Fracture Network; Ground Control; Underground Limestone Mines

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APA (6^th Edition):

Monsalve, J. J. (2019). Integrating Laser Scanning with Discrete Element Modeling for Improving Safety in Underground Stone Mines. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/90659

Chicago Manual of Style (16^th Edition):

Monsalve, Juan J. “Integrating Laser Scanning with Discrete Element Modeling for Improving Safety in Underground Stone Mines.” 2019. Masters Thesis, Virginia Tech. Accessed April 10, 2021. http://hdl.handle.net/10919/90659.

MLA Handbook (7^th Edition):

Monsalve, Juan J. “Integrating Laser Scanning with Discrete Element Modeling for Improving Safety in Underground Stone Mines.” 2019. Web. 10 Apr 2021.

Vancouver:

Monsalve JJ. Integrating Laser Scanning with Discrete Element Modeling for Improving Safety in Underground Stone Mines. [Internet] [Masters thesis]. Virginia Tech; 2019. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/10919/90659.

Council of Science Editors:

Monsalve JJ. Integrating Laser Scanning with Discrete Element Modeling for Improving Safety in Underground Stone Mines. [Masters Thesis]. Virginia Tech; 2019. Available from: http://hdl.handle.net/10919/90659

10. SILVA, Inaldo José Minervino da. Análise de estabilidade e deformação de cavidades em evaporitos pelo método dos elementos finitos.

Degree: 2015, Federal University of Pernambuco

URL: https://repositorio.ufpe.br/handle/123456789/17253

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CAPEs

Este trabalho tem por objetivo simular numericamente via método dos elementos finitos a deformabilidade e estabilidade geomecânica de lavras subterrâneas em evaporitos, considerando cenários… (more)

▼

CAPEs

Este trabalho tem por objetivo simular numericamente via método dos elementos finitos a deformabilidade e estabilidade geomecânica de lavras subterrâneas em evaporitos, considerando cenários de galerias executadas pelo método de câmaras e pilares e de escavação para estocagem de gás natural. Os evaporitos são economicamente importantes por serem fontes de matéria-prima para a fabricação de diversos produtos. A silvita é o mineral mais explorado para a produção de potássio, pois a sua estrutura química de cloreto simples favorece o seu aproveitamento industrial. No Brasil, a produção de potássio é realizada pela CVRD (Companhia Vale do Rio Doce) na mina de Taquari-Vassouras, que está localizada em Sergipe. Foi utilizado o modelo constitutivo mecanismo duplo de deformação com ativação térmica. Para validação do modelo constitutivo foi comparado resultados de simulações com resultados de medições, reais, de convergência de deformação, de câmaras do Painel D1. Foi estudado a possibilidade de influxo de água no Painel I5 e apresentou-se uma modelagem de um pilar 3D. Foi simulado, ainda, queda de blocos laterais e uma câmara para estocagem de gás natural. Para reproduzir os efeitos do processo de formação de fraturas, apresenta-se a técnica de fragmentação, a qual usa os elementos de interface para reproduzi-las. Onde os elementos regulares têm comportamento assumidamente de fluência e o comportamento dos elementos da região de interface é regido por um modelo constitutivo inelástico capaz de simular os fenômenos envolvidos no processo de degradação do material até a formação da fratura, como o modelo de dano. Tanto o modelo de dano como o modelo mecanismo duplo de deformação, de fluência estacionária, encontram-se implementados no programa, in-house, de elementos finitos CODE_BRIGHT (COupled DEformation BRIne Gas and Heat Transport). As análises apresentaram resultados consistentes, possibilitando o conhecimento do comportamento de fluência das rochas salinas, e seus efeitos, como subsidência, influxo de água, formações de chocos. Além disso, as análises demonstraram a viabilidade da aplicação da técnica de fratura em projetos de Engenharia com a aplicação da metodologia proposta.

This study aims to simulate numerically via the finite element method the deformability and geomechanical stability of underground mines in evaporites considering scenarios galleries performed by the method of room and pillar and digging for natural gas storage. The evaporites are economically important because they are sources of raw material for the manufacture of several products. The sylvite is the most explored mineral for potash production because its chemical structure simple chloride favors its industrial use. In Brazil, potash production is carried out by CVRD (Company Vale do Rio Doce) in the Taquari- Vassouras mine, which is located in Sergipe. We used the constitutive model dual mechanism of deformation with thermal activation. To validate the constitutive model was compared simulation…

Advisors/Committee Members: http://lattes.cnpq.br/3821425977868488, GUIMARÃES, Leonardo José do Nascimento.

Subjects/Keywords: Evaporito; Lavra subterrânea; Elementos finitos; Fluência; Dano; Evaporites; Underground mines; Finite elements; Creep; Damage

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

SILVA, I. J. M. d. (2015). Análise de estabilidade e deformação de cavidades em evaporitos pelo método dos elementos finitos. (Doctoral Dissertation). Federal University of Pernambuco. Retrieved from https://repositorio.ufpe.br/handle/123456789/17253

Chicago Manual of Style (16^th Edition):

SILVA, Inaldo José Minervino da. “Análise de estabilidade e deformação de cavidades em evaporitos pelo método dos elementos finitos.” 2015. Doctoral Dissertation, Federal University of Pernambuco. Accessed April 10, 2021. https://repositorio.ufpe.br/handle/123456789/17253.

MLA Handbook (7^th Edition):

SILVA, Inaldo José Minervino da. “Análise de estabilidade e deformação de cavidades em evaporitos pelo método dos elementos finitos.” 2015. Web. 10 Apr 2021.

Vancouver:

SILVA IJMd. Análise de estabilidade e deformação de cavidades em evaporitos pelo método dos elementos finitos. [Internet] [Doctoral dissertation]. Federal University of Pernambuco; 2015. [cited 2021 Apr 10]. Available from: https://repositorio.ufpe.br/handle/123456789/17253.

Council of Science Editors:

SILVA IJMd. Análise de estabilidade e deformação de cavidades em evaporitos pelo método dos elementos finitos. [Doctoral Dissertation]. Federal University of Pernambuco; 2015. Available from: https://repositorio.ufpe.br/handle/123456789/17253

Edith Cowan University

11. Khan, Muhammad Abbas. Detection of collapses and communicating with inaccessible areas in underground coal mines using WSN.

Degree: 2016, Edith Cowan University

URL: https://ro.ecu.edu.au/theses/1782

► Wireless sensor networks (WSN) are used in underground mines to monitor concentration of gases, temperature, and humidity. A WSN deployed in underground mines can also… (more)

▼ Wireless sensor networks (WSN) are used in underground mines to monitor concentration of gases, temperature, and humidity. A WSN deployed in underground mines can also be used for localisation of miners and for detecting collapses. Underground coal mines consist of long and narrow tunnels, several hundred metres beneath the surface of earth. These tunnels can be several kilometres long, with the width and height of these tunnels being no more than a few metres. A WSN in underground coal mine is an example of a chain type wireless sensor network (CWSN). CWSNs are special types of WSNs in which sensor nodes are placed along an elongated geographical area with the nodes forming a chain topology. In CWSNs, their shape dictates network design. Unlike other large scale WSN, there is only one path for data transfer in CWSNs. Hence the probability of network getting broken in disjoint sections, due to node failures, is much higher in CWSNs compared to other large scale WSNs. Disjoint sections are two sections of the same network which are out of the communication range of each other. When the network is broken into two or more disjoint sections, the sink node loses connectivity with parts of the network and hence some areas are left unmonitored despite having functional sensor nodes. In the first contribution chapter of this thesis, we design a distributed connectivity restoration algorithm for generic chain-type wireless sensor networks. We usemovable relay nodes to restore connectivity in the network. Our algorithm strivesto move a minimum number of relay nodes while only requiring local knowledge ofthe network. In the second contribution chapter, we consider the scenario of collapses occurring in underground coal mines. We design an algorithm for detecting collapses in chapter four. A collapse may leave parts of the mine inaccessible and unmonitored. A collapse will also break WSN into two or more disjoint sections which are physically separated by the collapse consisting of soil and rock. We investigate the propagation characteristics of EM waves through soil and rock. We determine the factors on which communication range of EM waves through soil depends on. We propose special movable relay nodes which use low frequency and high power transmitters to communicate through a collapsed area of the mine, restoring connectivity in the WSN. We design an algorithm to restore connectivity through collapsed areas of the underground mine tunnels using these special movable relay nodes. Communicating with inaccessible area of the mine will help locate miners which may be trapped in that section and will enable the network to monitor the inaccessible area of the mine.

Subjects/Keywords: WSN; underground mines; mine collapses; connectivity restoration; distributed algorithm; CWSN; relay notes; special relay nodes; coal mines and mining - communication systems; Electrical and Computer Engineering; Mining Engineering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Khan, M. A. (2016). Detection of collapses and communicating with inaccessible areas in underground coal mines using WSN. (Thesis). Edith Cowan University. Retrieved from https://ro.ecu.edu.au/theses/1782

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Khan, Muhammad Abbas. “Detection of collapses and communicating with inaccessible areas in underground coal mines using WSN.” 2016. Thesis, Edith Cowan University. Accessed April 10, 2021. https://ro.ecu.edu.au/theses/1782.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Khan, Muhammad Abbas. “Detection of collapses and communicating with inaccessible areas in underground coal mines using WSN.” 2016. Web. 10 Apr 2021.

Vancouver:

Khan MA. Detection of collapses and communicating with inaccessible areas in underground coal mines using WSN. [Internet] [Thesis]. Edith Cowan University; 2016. [cited 2021 Apr 10]. Available from: https://ro.ecu.edu.au/theses/1782.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Khan MA. Detection of collapses and communicating with inaccessible areas in underground coal mines using WSN. [Thesis]. Edith Cowan University; 2016. Available from: https://ro.ecu.edu.au/theses/1782

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Curtin University of Technology

12. Hassell, Rhett Colin. Corrosion of rock reinforcement in underground excavations .

Degree: 2008, Curtin University of Technology

URL: http://hdl.handle.net/20.500.11937/1247

► The effect of corrosion on the performance of rock support and reinforcement in Australian underground mines has not been widely researched and is generally not… (more)

▼ The effect of corrosion on the performance of rock support and reinforcement in Australian underground mines has not been widely researched and is generally not well understood. This is despite the number of safety concerns and operational difficulties created by corrosion in reducing the capacity and life expectancy of ground support. This thesis aims to investigate corrosion and relate how the environmental conditions in Australian underground hard rock mines impact on the service life of rock support and primarily rock reinforcement. Environmental characterisation of underground environments was completed at a number of mine sites located across Australia. This provided an improved understanding of the environmental conditions in Australian underground hard rock mines. Long-term testing on the impact of corrosion on the load bearing capacity of reinforcement and support under controlled experimental conditions was conducted in simulated underground environments. Rock reinforcement elements were examined in-situ by means of overcoring of the installed reinforcement and surrounding rock mass. Laboratory testing of the core determined changes in load transfer properties due to corrosion damage. These investigations provided an excellent understanding of the corrosion processes and mechanisms at work. Corrosion rates for a range of underground environments were established through the direct exposure and evaluation of metallic coupons in underground in-situ and simulated environments.It was found that the study of corrosion is challenging due to the time required to gather meaningful data. In particular, the wide range of materials that comprise ground support systems means that it is impossible to examine all the possible combinations of variables and their potential influence on the observed levels of corrosion and measured corrosion rates. Despite these challenges, the systematic investigation has resulted in new corrosivity classifications for both groundwater and atmospheric driven corrosion processes for various reinforcement and support systems used in the Australian underground mining industry. Previous corrosivity classifications were not found applicable. Furthermore, these new corrosivity classifications are simpler than previous classifications and corrosion rates may be predicted from readily obtained measurements of ground water dissolved oxygen and atmospheric relative humidity. Different types of reinforcement and surface support systems have been rated with respect to their corrosion resistance and estimates have been made for the expected service life for various rates of corrosion.

Subjects/Keywords: corrosion; rock support and reinforcement; environmental conditions; hard rock mines; Australian underground mines

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APA (6^th Edition):

Hassell, R. C. (2008). Corrosion of rock reinforcement in underground excavations . (Thesis). Curtin University of Technology. Retrieved from http://hdl.handle.net/20.500.11937/1247

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hassell, Rhett Colin. “Corrosion of rock reinforcement in underground excavations .” 2008. Thesis, Curtin University of Technology. Accessed April 10, 2021. http://hdl.handle.net/20.500.11937/1247.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hassell, Rhett Colin. “Corrosion of rock reinforcement in underground excavations .” 2008. Web. 10 Apr 2021.

Vancouver:

Hassell RC. Corrosion of rock reinforcement in underground excavations . [Internet] [Thesis]. Curtin University of Technology; 2008. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/20.500.11937/1247.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hassell RC. Corrosion of rock reinforcement in underground excavations . [Thesis]. Curtin University of Technology; 2008. Available from: http://hdl.handle.net/20.500.11937/1247

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

13. Richardson, Joshua J. Thermal and Hydrological Study of Flooded Abandoned Coal Mines in Ohio as Potential Heat Exchangers.

Degree: MS, Geological Sciences (Arts and Sciences), 2014, Ohio University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1399479195

► Traditionally, geothermal resources have required access to large amounts of heat, often in tectonically active basins. More recently, Ground Source Heat Pumps (GSHP) have been… (more)

Subjects/Keywords: Environmental Geology; Geochemistry; Geology; Hydrology; Geothermal; Heat Pump; Abandoned Underground Mines; Ohio; Corning Mine Complex; Ground Source Heat Pump; Heat Flow Mines

10 more images…

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APA (6^th Edition):

Richardson, J. J. (2014). Thermal and Hydrological Study of Flooded Abandoned Coal Mines in Ohio as Potential Heat Exchangers. (Masters Thesis). Ohio University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1399479195

Chicago Manual of Style (16^th Edition):

Richardson, Joshua J. “Thermal and Hydrological Study of Flooded Abandoned Coal Mines in Ohio as Potential Heat Exchangers.” 2014. Masters Thesis, Ohio University. Accessed April 10, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1399479195.

MLA Handbook (7^th Edition):

Richardson, Joshua J. “Thermal and Hydrological Study of Flooded Abandoned Coal Mines in Ohio as Potential Heat Exchangers.” 2014. Web. 10 Apr 2021.

Vancouver:

Richardson JJ. Thermal and Hydrological Study of Flooded Abandoned Coal Mines in Ohio as Potential Heat Exchangers. [Internet] [Masters thesis]. Ohio University; 2014. [cited 2021 Apr 10]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1399479195.

Council of Science Editors:

Richardson JJ. Thermal and Hydrological Study of Flooded Abandoned Coal Mines in Ohio as Potential Heat Exchangers. [Masters Thesis]. Ohio University; 2014. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1399479195

14. Bourmas, George. Μέθοδος εκτίμησης ευστάθειας υπογείων μεταλλευτικών θαλάμων με γενετικούς αλγορίθμους και νευρωνικά δίκτυα.

Degree: 2014, National Technical University of Athens (NTUA); Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ)

URL: http://hdl.handle.net/10442/hedi/42629

►

The room stability evaluation of underground mines constitutes an active field of applied research worldwide. Underground room instabilities are the main cause of fatal accidents… (more)

▼

The room stability evaluation of underground mines constitutes an active field of applied research worldwide. Underground room instabilities are the main cause of fatal accidents and equipment breakdowns in the underground mining industry. Their intensity is likely to increase in the near future as a result of gradual abandonment of surface mining operations in favor of underground exploitation of reserves, mainly due to high environmental impacts of the former. This work investigates the room stability of underground bauxite mines in terms of four random variables. The approximation of room stability function is implemented by combinatorial training of feed forward neural networks with genetic algorithms and resilient back propagation. The proposed method is used to approximate the room stability function of five active underground bauxite stopes and is compared to the empirical stability graph method, the voussoir beam analogue and discontinuous deformation analysis. The neural network model is superior to the aforementioned methods, as it predicts the failure or the likelihood of instability unlike the conventional approaches. Additionally, a Monte Carlo sensitivity analysis is conducted on the proposed model and the results confirm the empirical – based assessment of back stability.

Η γεωμηχανική συμπεριφορά της οροφής παραγωγικών υπογείων μεταλλευτικών θαλάμων αποτελεί ενεργό πεδίο εφαρμοσμένης έρευνας σε παγκόσμιο επίπεδο. Οι καταπτώσεις τεμαχών πετρώματος και οι καταρρεύσεις ανοιχτών μετώπων σε υπόγεια μεταλλεία αποτελούν τη συχνότερη αιτία θανατηφόρων ατυχημάτων και καταστροφής μηχανημάτων έργου. Στο εγγύς μέλλον ο αριθμός των μεταλλευτικών δυστυχημάτων που συνδέονται άμεσα με την αστοχία των υπογείων εκσκαφών αναμένεται να αυξηθεί, ως αποτέλεσμα της βαθμιαίας αντικατάστασης των επιφανειακών εκμεταλλεύσεων με υπόγειες, λόγω των σημαντικών περιβαλλοντικών επιπτώσεων που σχετίζονται με τις επιφανειακές εκμεταλλεύσεις και της ελάττωσης των αποθεμάτων που είναι οικονομικά εκμεταλλεύσιμα με επιφανειακές μεθόδους. Η Διδακτορική Διατριβή μοντελοποιεί την γεωμηχανική συμπεριφορά της στρωσιγενούς οροφής υπογείων βωξιτικών θαλάμων με τέσσερις τυχαίες μεταβλητές. Το αντικείμενο που πραγματεύεται η διατριβή συνιστά, εν γένει, πρόβλημα πολλών μεταβλητών, του οποίου η επιτυχής προσέγγιση απαιτεί διεπιστημονικές συνεργασίες και είναι άρρηκτα συνδεδεμένη τόσο με τη συλλογή αντιπροσωπευτικών πρωτογενών δεδομένων όσο και με την αξιολόγηση του είδους των τυχαίων μεταβλητών που πρέπει να μετρηθούν ή να υπολογιστούν. Πραγματοποιείται προσέγγιση της συνάρτησης ευστάθειας οροφής με την συνδυαστική εκπαίδευση νευρωνικών δικτύων εμπρόσθιας τροφοδότησης, αρχικά με γενετικούς αλγορίθμους και τελικά με ελαστική αναστροφή σφάλματος. Η προτεινόμενη μέθοδος εφαρμόζεται στην ανάλυση της γεωμηχανικής συμπεριφοράς πέντε ενεργών υπογείων βωξιτικών θαλάμων και τα σχετικά αποτελέσματα συγκρίνονται με τις αποκρίσεις που επιστρέφουν διεθνώς αναγνωρισμένες μέθοδοι ανάλυσης του εν λόγω προβλήματος, όπως είναι η μέθοδος του εμπειρικού γραφήματος…

Subjects/Keywords: Υπόγεια μεταλλεία; Κατάρρευση οροφής; Γενετικός αλγόριθμος; Νευρωνικό δίκτυο; Underground mines; Roof collapse; Genetic algorithm; Neural network

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Bourmas, G. (2014). Μέθοδος εκτίμησης ευστάθειας υπογείων μεταλλευτικών θαλάμων με γενετικούς αλγορίθμους και νευρωνικά δίκτυα. (Thesis). National Technical University of Athens (NTUA); Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ). Retrieved from http://hdl.handle.net/10442/hedi/42629

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Bourmas, George. “Μέθοδος εκτίμησης ευστάθειας υπογείων μεταλλευτικών θαλάμων με γενετικούς αλγορίθμους και νευρωνικά δίκτυα.” 2014. Thesis, National Technical University of Athens (NTUA); Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ). Accessed April 10, 2021. http://hdl.handle.net/10442/hedi/42629.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Bourmas, George. “Μέθοδος εκτίμησης ευστάθειας υπογείων μεταλλευτικών θαλάμων με γενετικούς αλγορίθμους και νευρωνικά δίκτυα.” 2014. Web. 10 Apr 2021.

Vancouver:

Bourmas G. Μέθοδος εκτίμησης ευστάθειας υπογείων μεταλλευτικών θαλάμων με γενετικούς αλγορίθμους και νευρωνικά δίκτυα. [Internet] [Thesis]. National Technical University of Athens (NTUA); Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ); 2014. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/10442/hedi/42629.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Bourmas G. Μέθοδος εκτίμησης ευστάθειας υπογείων μεταλλευτικών θαλάμων με γενετικούς αλγορίθμους και νευρωνικά δίκτυα. [Thesis]. National Technical University of Athens (NTUA); Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ); 2014. Available from: http://hdl.handle.net/10442/hedi/42629

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Wollongong

15. Qiao, Qiuqiu. Experimental and numerical analysis of thin spray-on liner materials for use in underground mines.

Degree: PhD, 2015, University of Wollongong

URL: 0905 CIVIL ENGINEERING, 0999 OTHER ENGINEERING ; https://ro.uow.edu.au/theses/4498

► Steel mesh that is currently used in underground coal mines is of a passive nature and in most cases does not contribute to roadway… (more)

Subjects/Keywords: thin spray-on liner; underground mines; coal pillar reinforcement; shear strength; tensile bond strength; rock mechanics; roadway support

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APA (6^th Edition):

Qiao, Q. (2015). Experimental and numerical analysis of thin spray-on liner materials for use in underground mines. (Doctoral Dissertation). University of Wollongong. Retrieved from 0905 CIVIL ENGINEERING, 0999 OTHER ENGINEERING ; https://ro.uow.edu.au/theses/4498

Chicago Manual of Style (16^th Edition):

Qiao, Qiuqiu. “Experimental and numerical analysis of thin spray-on liner materials for use in underground mines.” 2015. Doctoral Dissertation, University of Wollongong. Accessed April 10, 2021. 0905 CIVIL ENGINEERING, 0999 OTHER ENGINEERING ; https://ro.uow.edu.au/theses/4498.

MLA Handbook (7^th Edition):

Qiao, Qiuqiu. “Experimental and numerical analysis of thin spray-on liner materials for use in underground mines.” 2015. Web. 10 Apr 2021.

Vancouver:

Qiao Q. Experimental and numerical analysis of thin spray-on liner materials for use in underground mines. [Internet] [Doctoral dissertation]. University of Wollongong; 2015. [cited 2021 Apr 10]. Available from: 0905 CIVIL ENGINEERING, 0999 OTHER ENGINEERING ; https://ro.uow.edu.au/theses/4498.

Council of Science Editors:

Qiao Q. Experimental and numerical analysis of thin spray-on liner materials for use in underground mines. [Doctoral Dissertation]. University of Wollongong; 2015. Available from: 0905 CIVIL ENGINEERING, 0999 OTHER ENGINEERING ; https://ro.uow.edu.au/theses/4498

University of Tennessee – Knoxville

16. Herr, Brad Lee. The New SUB Urban.

Degree: M. Arch., Architecture, 2017, University of Tennessee – Knoxville

URL: https://trace.tennessee.edu/utk_gradthes/4880

► By pairing the unique and varying physical conditions of open-pit mines with the contextual situations and issues that surround them, these often abandoned and… (more)

Subjects/Keywords: open-pit mines; quarry; rock quarries; adaptive reuse; Nashville; underground living; Landscape Architecture; Other Architecture; Urban, Community and Regional Planning

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Herr, B. L. (2017). The New SUB Urban. (Thesis). University of Tennessee – Knoxville. Retrieved from https://trace.tennessee.edu/utk_gradthes/4880

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Herr, Brad Lee. “The New SUB Urban.” 2017. Thesis, University of Tennessee – Knoxville. Accessed April 10, 2021. https://trace.tennessee.edu/utk_gradthes/4880.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Herr, Brad Lee. “The New SUB Urban.” 2017. Web. 10 Apr 2021.

Vancouver:

Herr BL. The New SUB Urban. [Internet] [Thesis]. University of Tennessee – Knoxville; 2017. [cited 2021 Apr 10]. Available from: https://trace.tennessee.edu/utk_gradthes/4880.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Herr BL. The New SUB Urban. [Thesis]. University of Tennessee – Knoxville; 2017. Available from: https://trace.tennessee.edu/utk_gradthes/4880

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Penn State University

17. Eslambolchi, Safa. THE IMPACT OF SAFETY PERFORMANCE MEASURES AND STRUCTURAL FACTORS ON UNDERGROUND COAL MINE PRODUCTIVITY 03-07 .

Degree: 2010, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/10398

► Safety in the underground coal mine industry has always been a concern. The Mine Safety and Health Administration (MSHA) enforces safety rules and regulations by… (more)

Subjects/Keywords: underground coal mines; regression analysis; safety; productivity; mine size transition

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APA (6^th Edition):

Eslambolchi, S. (2010). THE IMPACT OF SAFETY PERFORMANCE MEASURES AND STRUCTURAL FACTORS ON UNDERGROUND COAL MINE PRODUCTIVITY 03-07 . (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/10398

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Eslambolchi, Safa. “THE IMPACT OF SAFETY PERFORMANCE MEASURES AND STRUCTURAL FACTORS ON UNDERGROUND COAL MINE PRODUCTIVITY 03-07 .” 2010. Thesis, Penn State University. Accessed April 10, 2021. https://submit-etda.libraries.psu.edu/catalog/10398.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Eslambolchi, Safa. “THE IMPACT OF SAFETY PERFORMANCE MEASURES AND STRUCTURAL FACTORS ON UNDERGROUND COAL MINE PRODUCTIVITY 03-07 .” 2010. Web. 10 Apr 2021.

Vancouver:

Eslambolchi S. THE IMPACT OF SAFETY PERFORMANCE MEASURES AND STRUCTURAL FACTORS ON UNDERGROUND COAL MINE PRODUCTIVITY 03-07 . [Internet] [Thesis]. Penn State University; 2010. [cited 2021 Apr 10]. Available from: https://submit-etda.libraries.psu.edu/catalog/10398.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Eslambolchi S. THE IMPACT OF SAFETY PERFORMANCE MEASURES AND STRUCTURAL FACTORS ON UNDERGROUND COAL MINE PRODUCTIVITY 03-07 . [Thesis]. Penn State University; 2010. Available from: https://submit-etda.libraries.psu.edu/catalog/10398

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Laurentian University

18. Hauta, Rebecca Lynn. Adapting methodologies from the forestry industry to measure the productivity of underground hard rock mining equipment .

Degree: 2017, Laurentian University

URL: https://zone.biblio.laurentian.ca/handle/10219/3161

► The purpose of this dissertation is to develop and apply a framework to characterize the ground support installation component of the mining development cycle in… (more)

Subjects/Keywords: ground support installation component; underground hard rock mines; equipment comparison; ground support installation process; semi-mechanized ground support installation productivity; mechanized ground support installation productivity

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hauta, R. L. (2017). Adapting methodologies from the forestry industry to measure the productivity of underground hard rock mining equipment . (Thesis). Laurentian University. Retrieved from https://zone.biblio.laurentian.ca/handle/10219/3161

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hauta, Rebecca Lynn. “Adapting methodologies from the forestry industry to measure the productivity of underground hard rock mining equipment .” 2017. Thesis, Laurentian University. Accessed April 10, 2021. https://zone.biblio.laurentian.ca/handle/10219/3161.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hauta, Rebecca Lynn. “Adapting methodologies from the forestry industry to measure the productivity of underground hard rock mining equipment .” 2017. Web. 10 Apr 2021.

Vancouver:

Hauta RL. Adapting methodologies from the forestry industry to measure the productivity of underground hard rock mining equipment . [Internet] [Thesis]. Laurentian University; 2017. [cited 2021 Apr 10]. Available from: https://zone.biblio.laurentian.ca/handle/10219/3161.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hauta RL. Adapting methodologies from the forestry industry to measure the productivity of underground hard rock mining equipment . [Thesis]. Laurentian University; 2017. Available from: https://zone.biblio.laurentian.ca/handle/10219/3161

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Laurentian University

19. Wang, Xin. Numerical modeling of seismic wave propagation in underground mines.

Degree: 2015, Laurentian University

URL: https://zone.biblio.laurentian.ca/dspace/handle/10219/2511

► The phenomenon of rockburst damage localization, which is not well understood, has been observed in deep underground mines. Analysis of seismic wave propagation in underground… (more)

▼ The phenomenon of rockburst damage localization, which is not well understood, has been observed in deep underground mines. Analysis of seismic wave propagation in underground mines is of great interest for improved understanding of the dynamic rock failure problem. This thesis aims at making a contribution for improving understanding of the seismic wave propagation in deep underground mines. Advanced numerical modeling tools are used and new modeling techniques are developed to attain this goal. In this thesis, research is emphasized on the ground motion around excavations due to seismic wave propagation that results from a fault-slip seismic event in the far-field and the near-field. It is found that moment tensor point source model seems to be suitable for the source representation in the far-field and the non-point source model (such as kinematic rupture source model) seems to be suitable for the source representation in the near-field. The modeling results confirm that ground motion is influenced by many factors such as target-source distance, slip direction, spatial location, and geometrical and geological conditions. Influence of wavelength-to-excavation span (/D) ratio on the wavefield is investigated to gain insights of ground motion behavior under both quasi-static and dynamic loading conditions. It is revealed that PPV (peak particle velocity) values increase as the /D ratio increases and the amplification effect increases as the /D ratio decreases. The loading condition maybe changed from the dynamic loading to the quasi-static condition when the /D is larger than 30. Strong dynamic loading should be considered when the /D ratio is small (less than 10, with a shear wavelength less than 50 m and an excavation span greater than 5 m) for most underground excavations. A method is proposed to estimate the quality factor (a measure of energy loss per oscillation cycle) for shear waves propagating in underground hard rocks so as to gain insight into the influence of internal attenuation on seismic wave propagation. A proper shear wave quality factor can be obtained by comparing modeling results with that from a scaling law, even if there are no high quality data for quality factor back analysis. Furthermore, the influence of different geological structures on seismic wave propagation is studied. It is shown that wave propagation patterns around an excavation can be altered and PPV amplification and shielding effect can occur near the excavation boundaries amongst other reasons due to heterogeneities such as tunnels, open and backfilled stopes, and dykes in underground mines. Finally, a coupled numerical procedure, which couples FLAC and SPECFEM2D, is developed to consider the excavation effect on ground motion. The FLAC model considers the excavationinduced stress change and rock mass failure, and passes the input data to SPECFEM2D by invoking FISH scripts. In addition, a new nonlinear velocity model that considers the influence of confinement and rock mass failure on wave…

Subjects/Keywords: Rockburst damage localization; Numerical simulation; Seismic wave propagation; Wavefield simulation; Ground motion; Non-uniform velocity model; Coupling; FLAC; SPECFEM2D/3D; PPV (Peak Particle Velocity); Rock failure; Underground mines

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wang, X. (2015). Numerical modeling of seismic wave propagation in underground mines. (Thesis). Laurentian University. Retrieved from https://zone.biblio.laurentian.ca/dspace/handle/10219/2511

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Wang, Xin. “Numerical modeling of seismic wave propagation in underground mines. ” 2015. Thesis, Laurentian University. Accessed April 10, 2021. https://zone.biblio.laurentian.ca/dspace/handle/10219/2511.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Wang, Xin. “Numerical modeling of seismic wave propagation in underground mines. ” 2015. Web. 10 Apr 2021.

Vancouver:

Wang X. Numerical modeling of seismic wave propagation in underground mines. [Internet] [Thesis]. Laurentian University; 2015. [cited 2021 Apr 10]. Available from: https://zone.biblio.laurentian.ca/dspace/handle/10219/2511.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Wang X. Numerical modeling of seismic wave propagation in underground mines. [Thesis]. Laurentian University; 2015. Available from: https://zone.biblio.laurentian.ca/dspace/handle/10219/2511

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Ohio University

20. Madera-Martorell, Andreana. Potential Use of Abandoned Underground Coal Mine AS-029 as a Reservoir for Ground Source Heat Pumps, Athens, OH.

Degree: MS, Environmental Studies (Voinovich), 2020, Ohio University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1597189919105252

► Ground source heat pumps (GSHPs) have been used for heating and cooling applications in areas where the thermal gradients are normal. Unlike conventional heating and… (more)

▼ Ground source heat pumps (GSHPs) have been used for heating and cooling applications in areas where the thermal gradients are normal. Unlike conventional heating and cooling systems, ground source heat pumps rely on ground or underground water temperature which is more constant than air temperature. Abandoned underground coal mines (AUMs) have been used as heat exchangers for ground source heat pumps in countries such as Nova Scotia, the Netherlands and states like Pennsylvania. Ohio has around 147 abandoned underground mines located close to towns and with sufficient water and heat available in the groundwater for heat exchange using ground source heat pumps. This project characterizes the potential of the AUM AS-029 located in Athens, Ohio, as a reservoir for GSHP technology in Ohio University or The Plains. Monitoring of the hydraulic and thermal response of groundwater wells around the mine was performed and a hydrogeological model was constructed in Visual MODFLOW to better understand the flow of water through the mine. Additionally, a thermal model of the mine was created considering the overburden thickness of the mine. Three monitoring wells were studied, one to the north of the mine and 2 to the South in The City of Athens well field in the Hocking River valley. Groundwater in the 4 wells respond to precipitation and changes in ambient temperature with a higher response in the wells with lower depth. One of the City of Athens wells, A10, has an unusual response with a high conductivity due to a nearby underground salt deposit. Ground water modeling and modeling of the heat absorbed by the mine shows that mine AS-029 can be used to receive heat, it cannot be used to give heat due to the low temperature of the groundwater in this area. The volume of water that circulates through the mine is not easily exchanged since only 0.03% is exchanged every day and it takes 2,900 days to substitute 100% of the water within the mine. For a change in temperature in the mine water of 10 C, 0.23 MW of heat could be absorbed. The mine could theoretically provide 2.43% of Ohio University’s heating/cooling system with this increase in temperature. In conclusion, mine AS-029 may serve as a geothermal reservoir for buildings for a small number of buildings at Ohio University or for Athens High School in The Plains. Advisors/Committee Members: López, Dina (Advisor).

Subjects/Keywords: Hydrology; Hydrologic Sciences; Environmental Geology; Environmental Science; Environmental Studies; Geology; Energy; Geothermal energy; groundwater modeling; Visual MODFLOW; ground source heat pumps; thermal modeling; hydrogeology; abandoned underground coal mines

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Madera-Martorell, A. (2020). Potential Use of Abandoned Underground Coal Mine AS-029 as a Reservoir for Ground Source Heat Pumps, Athens, OH. (Masters Thesis). Ohio University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1597189919105252

Chicago Manual of Style (16^th Edition):

Madera-Martorell, Andreana. “Potential Use of Abandoned Underground Coal Mine AS-029 as a Reservoir for Ground Source Heat Pumps, Athens, OH.” 2020. Masters Thesis, Ohio University. Accessed April 10, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1597189919105252.

MLA Handbook (7^th Edition):

Madera-Martorell, Andreana. “Potential Use of Abandoned Underground Coal Mine AS-029 as a Reservoir for Ground Source Heat Pumps, Athens, OH.” 2020. Web. 10 Apr 2021.

Vancouver:

Madera-Martorell A. Potential Use of Abandoned Underground Coal Mine AS-029 as a Reservoir for Ground Source Heat Pumps, Athens, OH. [Internet] [Masters thesis]. Ohio University; 2020. [cited 2021 Apr 10]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1597189919105252.

Council of Science Editors:

Madera-Martorell A. Potential Use of Abandoned Underground Coal Mine AS-029 as a Reservoir for Ground Source Heat Pumps, Athens, OH. [Masters Thesis]. Ohio University; 2020. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1597189919105252

Colorado School of Mines

21. Gu, Ruixiang. Distinct element model analyses of unstable failures in underground coal mines.

Degree: PhD, Mining Engineering, 2013, Colorado School of Mines

URL: http://hdl.handle.net/11124/78740

► Underground mining may induce shear failures along large rock discontinuities and sizable compressive failures of rock materials (e.g. coal) in sidewalls and mining faces. These… (more)

▼ Underground mining may induce shear failures along large rock discontinuities and sizable compressive failures of rock materials (e.g. coal) in sidewalls and mining faces. These failures can be in stable or unstable manner. When such failures occur in an unstable manner, they may be accompanied by a significant energy release from the surrounding rock and potentially create coal burst events. This thesis focuses on identifying failure stability in terms of their manifestation as a stable and unstable manner in underground coal mining settings using numerical modeling. Both discontinuity shear and compressive failures are considered. The influence of the shear failure stability on the compressive failure stability of sidewalls and mining faces is also considered. The study uses the numerical modeling program UDEC with its optional constitutive models continuously yielding joint model and the Mohr-Coulomb strain softening model. A laboratory scale numerical model of a double shear test setup is developed and used to assess the ability of UDEC in detecting the failure stability modes (i.e. stable or unstable failure) of discontinuity shear failures. The studies performed using this model confirmed that UDEC can identify the stable and unstable failures when using a previously defined failure stability criterion based on the relative stiffnesses of loading and failing systems. Using the double shear test model, methodologies are developed for identifying the failure stability. Further and detailed analyses of failure stability are performed in in-situ scale models. The results show that the failure stability is governed by the relative stiffnesses of failing discontinuities and loading stiffness of wall rocks. In-situ scale numerical models are also developed and used to study the failure stability in compression in coal mining settings. The results show that both stable and unstable shear failures can occur at the rock-coal interfaces depending on the post-failure characteristic of the interface and the shear loading stiffness of the interface. It is also shown that unstable coal sidewall and mining face failures can occur when a sudden de-confinement is triggered by an unstable failure at the rock-coal interfaces or the existence of weak contact regions along the interfaces. Advisors/Committee Members: Ozbay, M. Ugur (advisor), Miller, Hugh B. (committee member), Grubb, John W. (committee member), Griffiths, D. V. (committee member), Mustoe, Graham G. W. (committee member).

Subjects/Keywords: unstable failure; underground mining; UDEC; shear failure; distinct element model; compressive failure; Coal mines and mining; Rock bursts; Strains and stresses; Rock mechanics; Mining engineering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Gu, R. (2013). Distinct element model analyses of unstable failures in underground coal mines. (Doctoral Dissertation). Colorado School of Mines. Retrieved from http://hdl.handle.net/11124/78740

Chicago Manual of Style (16^th Edition):

Gu, Ruixiang. “Distinct element model analyses of unstable failures in underground coal mines.” 2013. Doctoral Dissertation, Colorado School of Mines. Accessed April 10, 2021. http://hdl.handle.net/11124/78740.

MLA Handbook (7^th Edition):

Gu, Ruixiang. “Distinct element model analyses of unstable failures in underground coal mines.” 2013. Web. 10 Apr 2021.

Vancouver:

Gu R. Distinct element model analyses of unstable failures in underground coal mines. [Internet] [Doctoral dissertation]. Colorado School of Mines; 2013. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/11124/78740.

Council of Science Editors:

Gu R. Distinct element model analyses of unstable failures in underground coal mines. [Doctoral Dissertation]. Colorado School of Mines; 2013. Available from: http://hdl.handle.net/11124/78740

Université de Lorraine

22. Kinscher, Jannes Lennart. The analysis and interpretation of microseismicity induced by a collapsing solution mining cavity : A contribution for progress in hazard assessment of underground cavities : Analyse et interprétation de la microsismicité induite par l’effondrement provoqué d’une cavité saline créée par dissolution : une contribution pour progresser dans l'évaluation des risques d’instabilité de cavités souterraines.

Degree: Docteur es, Mécanique - Génie civil, 2015, Université de Lorraine

URL: http://www.theses.fr/2015LORR0022

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Pour progresser dans la compréhension des mécanismes liés aux instabilités des cavités souterraines à partir de la réponse microsismique associée, l'effondrement provoqué d'une cavité saline… (more)

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Pour progresser dans la compréhension des mécanismes liés aux instabilités des cavités souterraines à partir de la réponse microsismique associée, l'effondrement provoqué d'une cavité saline (~ 200 m en diamètre), créée par dissolution, a été instrumentée sur un site d’exploitation de SOLVAY à Cerville-Buissoncourt (Lorraine, France). Pendant l’expérimentation un vaste ensemble des données a été enregistré (~ 50,000 fichiers d'événements) dont la majorité (80%) est constitué d’essaims microsismiques singuliers. Cette thèse présente une analyse et une interprétation détaillée de cette base de données microsismiques grâce à l’adaptation de méthodologies de traitement originales, dont les résultats améliorent notre compréhension sur la nature de la microsismicité liée aux processus de création et d’effondrement des cavités souterraines, ainsi que sur l’évaluation de l’aléa associé. Les résultats principaux obtenus sont les suivants : les événements microsismiques sont comparables à des petits séismes tectoniques ayant des magnitudes de moment variant entre -3 et 1. (ii) L’ensemble des événements microsismiques montre un mécanisme en cisaillement (double-couple) remarquablement stable et est associé à un régime en faille inverse d’orientation NO - SE, plongeant à environ 35°– 55°. Ce phénomène est probablement lié à la présence de fractures préexistantes sur le site. (iii) L'origine des essaims microsismiques est certainement due à l'incapacité du système à créer des fractures de grandes dimensions capables de libérer des contraintes très importantes. Cela est probablement lié aux propriétés mécaniques du toit de la cavité. (iv) Les périodes d’effondrements du toit de la cavité sont associées à une dynamique de forçage systématique et montrent une réponse microsismique particulière, qui peut-être décrite par des lois statistiques. Les travaux de recherche de cette thèse confirment également, que la surveillance microsismique peut être un outil puissant pour étudier les processus d’instabilité des cavités souterraines, même avec un nombre réduit de capteurs si des outils d’analyse adaptés sont utilisés

In order to improve our understanding of hazardous underground cavities and its microseismic response, the development and collapse of a ~ 200 m wide salt solution mining cavity was monitored at Cerville-Buissoncourt in the Lorraine basin in NE France. The majority of the obtained dataset (~80%) was constituted of numerous unusual microseismic swarming events (~50.000 event files). This thesis presents innovative methods able to treat this specific microseismic data set, whose results provide new and fundamental insights into the principal characteristics of caving and collapsing related microseismicity and hazard assessment of excavated underground formations. The principal results are as follows: (i) the individual microseismic events are comparable to small natural tectonic earthquakes with moment magnitudes Mw ranging from around -3 to 1. (ii) Source mechanisms for most microseismic events are remarkable stable and…

Advisors/Committee Members: Piguet, Jack-Pierre (thesis director), Bernard, Pascal (thesis director).

Subjects/Keywords: Microsismicité induite; Essaim; Extraction par dissolution; Cavités et mines souterraines; Évaluation d’aléa; Détection; Localisation; Analyse de la source; Induced microseismicity; Swarm; Solution mining; Underground openings and mines; Hazard assessment; Detection; Location; Source analysis; 551.22

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Kinscher, J. L. (2015). The analysis and interpretation of microseismicity induced by a collapsing solution mining cavity : A contribution for progress in hazard assessment of underground cavities : Analyse et interprétation de la microsismicité induite par l’effondrement provoqué d’une cavité saline créée par dissolution : une contribution pour progresser dans l'évaluation des risques d’instabilité de cavités souterraines. (Doctoral Dissertation). Université de Lorraine. Retrieved from http://www.theses.fr/2015LORR0022

Chicago Manual of Style (16^th Edition):

Kinscher, Jannes Lennart. “The analysis and interpretation of microseismicity induced by a collapsing solution mining cavity : A contribution for progress in hazard assessment of underground cavities : Analyse et interprétation de la microsismicité induite par l’effondrement provoqué d’une cavité saline créée par dissolution : une contribution pour progresser dans l'évaluation des risques d’instabilité de cavités souterraines.” 2015. Doctoral Dissertation, Université de Lorraine. Accessed April 10, 2021. http://www.theses.fr/2015LORR0022.

MLA Handbook (7^th Edition):

Kinscher, Jannes Lennart. “The analysis and interpretation of microseismicity induced by a collapsing solution mining cavity : A contribution for progress in hazard assessment of underground cavities : Analyse et interprétation de la microsismicité induite par l’effondrement provoqué d’une cavité saline créée par dissolution : une contribution pour progresser dans l'évaluation des risques d’instabilité de cavités souterraines.” 2015. Web. 10 Apr 2021.

Vancouver:

Kinscher JL. The analysis and interpretation of microseismicity induced by a collapsing solution mining cavity : A contribution for progress in hazard assessment of underground cavities : Analyse et interprétation de la microsismicité induite par l’effondrement provoqué d’une cavité saline créée par dissolution : une contribution pour progresser dans l'évaluation des risques d’instabilité de cavités souterraines. [Internet] [Doctoral dissertation]. Université de Lorraine; 2015. [cited 2021 Apr 10]. Available from: http://www.theses.fr/2015LORR0022.

Council of Science Editors:

Kinscher JL. The analysis and interpretation of microseismicity induced by a collapsing solution mining cavity : A contribution for progress in hazard assessment of underground cavities : Analyse et interprétation de la microsismicité induite par l’effondrement provoqué d’une cavité saline créée par dissolution : une contribution pour progresser dans l'évaluation des risques d’instabilité de cavités souterraines. [Doctoral Dissertation]. Université de Lorraine; 2015. Available from: http://www.theses.fr/2015LORR0022

23. ΚΟΝΤΟΘΑΝΑΣΗΣ, ΠΑΝΑΓΙΩΤΗΣ. ΑΥΤΟΜΑΤΗ ΠΑΡΑΚΟΛΟΥΘΗΣΗ ΤΗΣ ΠΟΙΟΤΗΤΑΣ ΤΗΣ ΑΤΜΟΣΦΑΙΡΑΣ ΥΠΟΓΕΙΟΥ ΜΕΤΑΛΛΕΙΟΥ ΣΤΟ ΟΠΟΙΟ ΧΡΗΣΙΜΟΠΟΙΕΙΤΑΙ ΕΞΟΠΛΙΣΜΟΣ DIESEL.

Degree: 1990, Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ); National Technical University of Athens (NTUA)

URL: http://hdl.handle.net/10442/hedi/3041

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ΒΑΣΙΚΟ ΣΤΟΧΟ ΤΗΣ ΔΙΑΤΡΙΒΗΣ ΑΠΟΤΕΛΕΙ Ο ΣΧΕΔΙΑΣΜΟΣ ΚΑΙ Η ΚΑΤΑΣΚΕΥΗ ΕΝΟΣ ΕΥΕΛΙΚΤΟΥΚΑΙ ΧΑΜΗΛΟΥ ΚΟΣΤΟΥΣ ΑΥΤΟΜΑΤΟΥ ΣΥΣΤΗΜΑΤΟΣ ΠΑΡΑΚΟΛΟΥΘΗΣΗΣ ΤΗΣ ΠΟΙΟΤΗΤΑΣ ΤΗΣ ΑΤΜΟΣΦΑΙΡΑΣ ΤΩΝ ΥΠΟΓΕΙΩΝ ΜΕΤΑΛΛΕΙΩΝ ΚΑΙ,… (more)

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ΒΑΣΙΚΟ ΣΤΟΧΟ ΤΗΣ ΔΙΑΤΡΙΒΗΣ ΑΠΟΤΕΛΕΙ Ο ΣΧΕΔΙΑΣΜΟΣ ΚΑΙ Η ΚΑΤΑΣΚΕΥΗ ΕΝΟΣ ΕΥΕΛΙΚΤΟΥΚΑΙ ΧΑΜΗΛΟΥ ΚΟΣΤΟΥΣ ΑΥΤΟΜΑΤΟΥ ΣΥΣΤΗΜΑΤΟΣ ΠΑΡΑΚΟΛΟΥΘΗΣΗΣ ΤΗΣ ΠΟΙΟΤΗΤΑΣ ΤΗΣ ΑΤΜΟΣΦΑΙΡΑΣ ΤΩΝ ΥΠΟΓΕΙΩΝ ΜΕΤΑΛΛΕΙΩΝ ΚΑΙ, ΙΔΙΩΣ, ΤΩΝ ΑΘΡΟΙΣΤΙΚΩΝ ΕΠΙΠΤΩΣΕΩΝ ΕΠΙ ΤΗΣ ΥΓΕΙΑΣ ΤΩΝ ΕΚΤΙΘΕΜΕΝΩΝ ΕΡΓΑΖΟΜΕΝΩΝ ΣΤΑ ΕΚΠΕΜΠΟΜΕΝΑ ΚΑΥΣΑΕΡΙΑ ΤΟΥ ΝΤΙΖΕΛΟΚΙΝΗΤΟΥ ΕΞΟΠΛΙΣΜΟΥ, ΤΟ ΟΠΟΙΟ ΘΑ ΒΑΣΙΖΕΤΑΙ ΣΕ ΕΛΑΧΙΣΤΟ ΑΡΙΘΜΟ ΑΙΣΘΗΤΗΡΩΝ, ΤΟΠΟΘΕΤΗΜΕΝΩΝ ΣΤΙΣ ΒΕΛΤΙΣΤΕΣ ΘΕΣΕΙΣ ΠΛΗΣΙΩΝ ΤΩΝ ΜΕΤΩΠΩΝ ΛΕΙΤΟΥΡΓΙΑΣ ΤΟΥ ΕΝ ΛΟΓΩ ΕΞΟΠΛΙΣΜΟΥ. ΣΤΑ ΠΛΑΙΣΙΑ ΤΗΣ ΕΡΓΑΣΙΑΣ ΕΠΙΝΟΗΘΗΚΕ ΝΕΑ ΜΕΘΟΔΟΣ ΕΚΤΙΜΗΣΕΩΣ ΤΗΣ ΠΟΙΟΤΗΤΑΣΤΗΣ ΑΤΜΟΣΦΑΙΡΑΣ ΣΕ ΔΕΔΟΜΕΝΕΣ ΘΕΣΕΙΣ ΤΟΥ ΥΠΟΓΕΙΟΥ ΔΙΚΤΥΟΥ ΟΠΟΥ ΛΕΙΤΟΥΡΓΕΙ ΠΟΛΥΑΡΙΘΜΟΣ ΝΤΙΖΕΛΟΚΙΝΗΤΟΣ ΕΞΟΠΛΙΣΜΟΣ, ΜΕΣΩ ΤΗΣ ΜΕΤΡΗΣΕΩΣ ΤΟΥ CO ΚΑΙ ΤΗΣ ΛΕΠΤΟΜΕΡΩΣ ΔΙΑΜΕΡΙΣΜΕΝΗΣ ΥΛΗΣ. Η ΑΝΑΠΤΥΞΗ ΤΗΣ ΜΕΘΟΔΟΥ ΒΑΣΙΖΕΤΑΙ ΣΤΟΝ ΟΡΙΣΜΟ ΤΟΥ "ΜΕΣΟΥ ΧΡΟΝΙΚΑ ΣΤΑΘΜΙΣΜΕΝΟΥ ΔΕΙΚΤΗ ΠΟΙΟΤΗΤΑΣ ΤΟΥ ΑΕΡΑ" ΩΣ ΑΝΤΙΣΤΟΙΧΟΥ ΚΡΙΤΗΡΙΟΥ ΕΛΕΓΧΟΥ ΤΗΣ ΑΤΜΟΣΦΑΙΡΑΣ.

THE BASIC OBJECTIVE OF THE THESIS IS THE STUDY OF THE OPERATION AND THE CAPABILITIES OF MODERN MINE VENTILATION MONITORING SYSTEMS WITH SPECIAL EMPHASIS TO THE INTENSE USE OF VARIOUS DIESEL-POWERED EQUIPMENT. TOWARDS THE ABOVE AIM, AN AUTOMATIC AIR QUALITY MONITORING SYSTEM HAS BEEN DESIGNED AND DEVELOPED, DURING THE RESEARCH WORK, ADAPTED TO THE REQUIREMENTS OF AN UNDERGROUND BAUXITE MINES. THE OPTIMIZATION OF THE USE OF THE SYSTEM FOR MONITORING THE GASEOUS AND PARTICULATE SUBSTANCES OF DIESEL EXHAUST WAS CONSIDERED OF PARAMOUNT IMPORTANCE. THE PRIMARY GOAL WAS THE CONTROL OF THE ATMOSPHERE QUALITY ON THE BASIS OF THE CRITERION EXPRESSED BY THE AIR QUALITY INDEX (AQI) THROUGH THE MINIMIZATION OF THE POLLUTANTS UNDER MONITORING. A PROTOTYPE METHOD, BASED ON THE INTRODUCED TERM OF THE "MEAN TIME-WEIGHTED AIR QUALITY INDEX" (AQIDT), AND ON THE MEASUREMENTS OF CO AND PM CONCENTRATIONS, WAS DEVELOPED.

Subjects/Keywords: AUTOMATIC MONITORING; DIESEL-POWERED MINES; MINE VENTILATION; UNDERGROUND MINES; ΑΕΡΙΣΜΟΣ-ΑΤΜΟΣΦΑΙΡΑ; ΑΥΤΟΜΑΤΗ ΠΑΡΑΚΟΛΟΥΘΗΣΗ; ΡΥΠΑΝΤΕΣ DIESEL; ΥΠΟΓΕΙΟ ΜΕΤΑΛΛΕΙΟ

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APA (6^th Edition):

ΚΟΝΤΟΘΑΝΑΣΗΣ, �. (1990). ΑΥΤΟΜΑΤΗ ΠΑΡΑΚΟΛΟΥΘΗΣΗ ΤΗΣ ΠΟΙΟΤΗΤΑΣ ΤΗΣ ΑΤΜΟΣΦΑΙΡΑΣ ΥΠΟΓΕΙΟΥ ΜΕΤΑΛΛΕΙΟΥ ΣΤΟ ΟΠΟΙΟ ΧΡΗΣΙΜΟΠΟΙΕΙΤΑΙ ΕΞΟΠΛΙΣΜΟΣ DIESEL. (Thesis). Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ); National Technical University of Athens (NTUA). Retrieved from http://hdl.handle.net/10442/hedi/3041

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

ΚΟΝΤΟΘΑΝΑΣΗΣ, ΠΑΝΑΓΙΩΤΗΣ. “ΑΥΤΟΜΑΤΗ ΠΑΡΑΚΟΛΟΥΘΗΣΗ ΤΗΣ ΠΟΙΟΤΗΤΑΣ ΤΗΣ ΑΤΜΟΣΦΑΙΡΑΣ ΥΠΟΓΕΙΟΥ ΜΕΤΑΛΛΕΙΟΥ ΣΤΟ ΟΠΟΙΟ ΧΡΗΣΙΜΟΠΟΙΕΙΤΑΙ ΕΞΟΠΛΙΣΜΟΣ DIESEL.” 1990. Thesis, Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ); National Technical University of Athens (NTUA). Accessed April 10, 2021. http://hdl.handle.net/10442/hedi/3041.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

ΚΟΝΤΟΘΑΝΑΣΗΣ, ΠΑΝΑΓΙΩΤΗΣ. “ΑΥΤΟΜΑΤΗ ΠΑΡΑΚΟΛΟΥΘΗΣΗ ΤΗΣ ΠΟΙΟΤΗΤΑΣ ΤΗΣ ΑΤΜΟΣΦΑΙΡΑΣ ΥΠΟΓΕΙΟΥ ΜΕΤΑΛΛΕΙΟΥ ΣΤΟ ΟΠΟΙΟ ΧΡΗΣΙΜΟΠΟΙΕΙΤΑΙ ΕΞΟΠΛΙΣΜΟΣ DIESEL.” 1990. Web. 10 Apr 2021.

Vancouver:

ΚΟΝΤΟΘΑΝΑΣΗΣ �. ΑΥΤΟΜΑΤΗ ΠΑΡΑΚΟΛΟΥΘΗΣΗ ΤΗΣ ΠΟΙΟΤΗΤΑΣ ΤΗΣ ΑΤΜΟΣΦΑΙΡΑΣ ΥΠΟΓΕΙΟΥ ΜΕΤΑΛΛΕΙΟΥ ΣΤΟ ΟΠΟΙΟ ΧΡΗΣΙΜΟΠΟΙΕΙΤΑΙ ΕΞΟΠΛΙΣΜΟΣ DIESEL. [Internet] [Thesis]. Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ); National Technical University of Athens (NTUA); 1990. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/10442/hedi/3041.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

ΚΟΝΤΟΘΑΝΑΣΗΣ �. ΑΥΤΟΜΑΤΗ ΠΑΡΑΚΟΛΟΥΘΗΣΗ ΤΗΣ ΠΟΙΟΤΗΤΑΣ ΤΗΣ ΑΤΜΟΣΦΑΙΡΑΣ ΥΠΟΓΕΙΟΥ ΜΕΤΑΛΛΕΙΟΥ ΣΤΟ ΟΠΟΙΟ ΧΡΗΣΙΜΟΠΟΙΕΙΤΑΙ ΕΞΟΠΛΙΣΜΟΣ DIESEL. [Thesis]. Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ); National Technical University of Athens (NTUA); 1990. Available from: http://hdl.handle.net/10442/hedi/3041

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

North-West University

24. Oosthuizen, Nicolas Laurens. Optimum water distribution between pumping stations of multiple mine shafts / Nicolas Laurens Oosthuizen.

Degree: 2012, North-West University

URL: http://hdl.handle.net/10394/9189

► In 2011 the mining industry purchased 14.5% of the electrical energy generated by Eskom. During 2011 in South Africa, dewatering pump systems on gold mines… (more)

Subjects/Keywords: Mining industry; underground dewatering pump systems; gold mines; electrical energy; financial savings; time-of-use (TOU) schedules; improving a pumping scheme; multiple mineshafts; water reticulation system; load-shifting; Mynbedryf; ondergrondse pompstelsels; goudmyne; elektriese energie; finansiële besparing; piektye; optimering van pompskemas; verskeie mynskagte; retikulasiestelsel; lasskuif

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APA (6^th Edition):

Oosthuizen, N. L. (2012). Optimum water distribution between pumping stations of multiple mine shafts / Nicolas Laurens Oosthuizen. (Thesis). North-West University. Retrieved from http://hdl.handle.net/10394/9189

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Oosthuizen, Nicolas Laurens. “Optimum water distribution between pumping stations of multiple mine shafts / Nicolas Laurens Oosthuizen. ” 2012. Thesis, North-West University. Accessed April 10, 2021. http://hdl.handle.net/10394/9189.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Oosthuizen, Nicolas Laurens. “Optimum water distribution between pumping stations of multiple mine shafts / Nicolas Laurens Oosthuizen. ” 2012. Web. 10 Apr 2021.

Vancouver:

Oosthuizen NL. Optimum water distribution between pumping stations of multiple mine shafts / Nicolas Laurens Oosthuizen. [Internet] [Thesis]. North-West University; 2012. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/10394/9189.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Oosthuizen NL. Optimum water distribution between pumping stations of multiple mine shafts / Nicolas Laurens Oosthuizen. [Thesis]. North-West University; 2012. Available from: http://hdl.handle.net/10394/9189

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Virginia Tech

25. Murphy, Michael M. Analysis of Seismic Signatures Generated from Controlled Methane and Coal Dust Explosions in an Underground Mine.

Degree: PhD, Mining and Minerals Engineering, 2008, Virginia Tech

URL: http://hdl.handle.net/10919/29705

► Examination of seismic records during the time interval of the Sago Mine disaster in 2006 revealed a small amplitude signal possibly associated with an event… (more)

▼ Examination of seismic records during the time interval of the Sago Mine disaster in 2006 revealed a small amplitude signal possibly associated with an event in the mine. Although the epicenter of the signature was located in the vicinity where the explosion occurred, it could not be unequivocally attributed to the explosion. More needs to be understood about the seismicity from mine explosions in order to properly interpret critical seismic information. A seismic monitoring system located at NIOSHâ s Lake Lynn Experimental Mine has monitored nineteen experimental methane and dust based explosions. The objective of the study was to analyze seismic signatures generated by the methane and dust explosions to begin understanding their characteristics at different distances away from the source. The seismic signatures from these different events were analyzed using standard waveform analysis procedures in order to estimate the moment magnitude and radiated seismic energy. The procedures used to analyze the data were conducted using self-produced programs not available with existing commercial software. The signatures of the explosions were found to be extremely complex due a combination of mine geometry and experimental design, both of which could not be controlled for the purposes of the study. Geophones located approximately 600 m (1970 ft) and over from the source collected limited data because of the attenuation of the seismic waves generated by the methane explosion. A combination of the methods used to characterize the seismic signatures allowed for differentiation between experimental designs and the size of the explosion. The factors having the largest impact on the signatures were the mine geometry, size of the methane explosion, construction of the mine seal and location of the mine seal. A relationship was derived to correlate the radiated seismic energy to the size of the explosion. Recommendations were made, based upon the limitations of this study, on methods for better collection of seismic data in the future. Advisors/Committee Members: Westman, Erik Christian (committeechair), Barczak, Thomas (committee member), Chapman, Martin C. (committee member), Karfakis, Mario G. (committee member), Karmis, Michael E. (committee member), Swanson, Peter (committee member).

Subjects/Keywords: underground mines; seismic monitoring; radiated seismic energy; mine seals; instrumentation; methane and coal dust explosions

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APA (6^th Edition):

Murphy, M. M. (2008). Analysis of Seismic Signatures Generated from Controlled Methane and Coal Dust Explosions in an Underground Mine. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/29705

Chicago Manual of Style (16^th Edition):

Murphy, Michael M. “Analysis of Seismic Signatures Generated from Controlled Methane and Coal Dust Explosions in an Underground Mine.” 2008. Doctoral Dissertation, Virginia Tech. Accessed April 10, 2021. http://hdl.handle.net/10919/29705.

MLA Handbook (7^th Edition):

Murphy, Michael M. “Analysis of Seismic Signatures Generated from Controlled Methane and Coal Dust Explosions in an Underground Mine.” 2008. Web. 10 Apr 2021.

Vancouver:

Murphy MM. Analysis of Seismic Signatures Generated from Controlled Methane and Coal Dust Explosions in an Underground Mine. [Internet] [Doctoral dissertation]. Virginia Tech; 2008. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/10919/29705.

Council of Science Editors:

Murphy MM. Analysis of Seismic Signatures Generated from Controlled Methane and Coal Dust Explosions in an Underground Mine. [Doctoral Dissertation]. Virginia Tech; 2008. Available from: http://hdl.handle.net/10919/29705

26. Smith, Sandra V. L. Retrospective analysis of mine seismicity: Glencore, Kidd Mine .

Degree: 2017, Laurentian University

URL: https://zone.biblio.laurentian.ca/handle/10219/2807

► Understanding the rock mass response to underground mining is a significant benefit to assist with decisions aimed at maintaining safe access and controlling conditions in… (more)

Subjects/Keywords: Seismicity; Deep underground mines; Deep hardrock mines; Mining-induced seismicity; rock mass response to mining; Ontario hardrock mines; mXrap analysis in deep hardrock mines; energy variations; apparent stress; spatial and temporal analysis

…empirical observations. 1.1 Seismicity in Underground Mines In a pre-mining state, a rock mass… …falls that are independent of seismicity in underground mines. In conditions where the strain… …behaviour in underground mining is a significant benefit to assist with decisions aimed at… …underground instability: structurally controlled, gravity driven fallout and stress controlled rock… …Underground mine development activities promote local changes in the stress state as rock is…

10 more images…

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APA (6^th Edition):

Smith, S. V. L. (2017). Retrospective analysis of mine seismicity: Glencore, Kidd Mine . (Thesis). Laurentian University. Retrieved from https://zone.biblio.laurentian.ca/handle/10219/2807

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Smith, Sandra V L. “Retrospective analysis of mine seismicity: Glencore, Kidd Mine .” 2017. Thesis, Laurentian University. Accessed April 10, 2021. https://zone.biblio.laurentian.ca/handle/10219/2807.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Smith, Sandra V L. “Retrospective analysis of mine seismicity: Glencore, Kidd Mine .” 2017. Web. 10 Apr 2021.

Vancouver:

Smith SVL. Retrospective analysis of mine seismicity: Glencore, Kidd Mine . [Internet] [Thesis]. Laurentian University; 2017. [cited 2021 Apr 10]. Available from: https://zone.biblio.laurentian.ca/handle/10219/2807.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Smith SVL. Retrospective analysis of mine seismicity: Glencore, Kidd Mine . [Thesis]. Laurentian University; 2017. Available from: https://zone.biblio.laurentian.ca/handle/10219/2807

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

North-West University

27. Den Boef, Martinus. Assessment of the national DSM potential in mine underground services / M. den Boef .

Degree: 2003, North-West University

URL: http://hdl.handle.net/10394/111

► ESKOM is moving towards a price structure for electricity which reflects, as far as possible, the real cost of generation. It is called real time… (more)

▼ ESKOM is moving towards a price structure for electricity which reflects, as far as possible, the real cost of generation. It is called real time pricing (RTP). ESKOM developed this cost structure to coax customers to use more electricity in off-peak periods (low cost of generation) and less electricity in peak periods (high cost of generation). However, many industries do not effectively use these price offerings from ESKOM to the detriment of themselves and ESKOM. In previous research improvements to this situation for the South African mining industry were investigated. ESKOM funded research to find the potential for load shifting on mines using RTP. The RTP investigation focused on the supply side management (SSM) in the mining context of underground services on gold and platinum mines. Elements investigated included the ventilation, cooling and pumping (VCP) systems. (Except for pumps, these plants are generally installed aboveground.) Previous research showed a national RTP and SSM potential to shift 500 MW of electrical load for a period of 5 hours. Through the previous research it became clear that the mines were previously able to react partially to the price signals. However, it was proved by the research that the full load shift potential can only be realised through the use of integrated dynamic simulation and optimisation. An even higher potential exists for load shift and electricity efficiency through demand side management (DSM) on the underground services. Therefore, if underground DSM strategies are combined with SSM strategies, a further and much bigger potential can be exploited to the benefit of ESKOM and the mines. Due to these factors this study was undertaken. Three case study mines were identified for this study. They are Kopanang and Target, both gold mines, and Amandelbult, a platinum mine. The DSM potential on each of these mines was calculated using simulation, calibration, verification and optimisation. These results were presented to mine management to negotiate the implementation of the proposed strategies on one of the mines. Kopanang's management agreed to the implementation of these strategies for a trial period of 3 months after which the success would be evaluated. The results of the implementation, together with the case study results, were used to calculate the national DSM potential in the mining sector through extrapolation. The DSM potential amounts to 650 MW of load per day as well as 5% on electricity consumption. This amounts to a potential saving of R72.1 million per year using current tariffs. This means that ESKOM can save about R5000 million on the building of a new power station to supply the equivalent load to the DSM potential. Now that the national impact has been calculated and discussed, all these findings must be used to motivate the implementation of these strategies throughout the mining sector. A similar project can be undertaken to look at possible DSM strategies in the industrial sector. This might prove to be more…

Subjects/Keywords: Amandelbult; Cooling; Demand side management (DSM); ESKOM; Gold mines; Kopanang; National energy regulator (NER); Optimisation; Platinum mines; Pumping; Real time pricing (RTP); Simulation; South African mining industry; Target; Ventilation; Underground services; DSM

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Den Boef, M. (2003). Assessment of the national DSM potential in mine underground services / M. den Boef . (Thesis). North-West University. Retrieved from http://hdl.handle.net/10394/111

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Den Boef, Martinus. “Assessment of the national DSM potential in mine underground services / M. den Boef .” 2003. Thesis, North-West University. Accessed April 10, 2021. http://hdl.handle.net/10394/111.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Den Boef, Martinus. “Assessment of the national DSM potential in mine underground services / M. den Boef .” 2003. Web. 10 Apr 2021.

Vancouver:

Den Boef M. Assessment of the national DSM potential in mine underground services / M. den Boef . [Internet] [Thesis]. North-West University; 2003. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/10394/111.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Den Boef M. Assessment of the national DSM potential in mine underground services / M. den Boef . [Thesis]. North-West University; 2003. Available from: http://hdl.handle.net/10394/111

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Ohio University

28. Sahu, Parameswar. Use of Time Series, Barometric and Tidal Analyses to Conceptualize and Model Flow in an Underground Mine: The Corning Mine Complex, Ohio.

Degree: MS, Geological Sciences (Arts and Sciences), 2004, Ohio University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1108395116

► Understanding flow-system dynamics of underground coal mine complexes, such as the Corning mine complex that discharges acid mine drainage into Sunday Creek, is essential… (more)

▼ Understanding flow-system dynamics of underground coal mine complexes, such as the Corning mine complex that discharges acid mine drainage into Sunday Creek, is essential to designing in-situ remediation. Time series analysis is applied to the study of mine aquifers to characterize the systems between the input function (precipitation) and the output functions (discharge and head). Results are presented as correlograms, coherency diagrams, phase diagrams, and cross correlograms. The analysis of Corning discharge shows that the aquifer has a short response time and has a low storage capacity. A time lag of 3 to 4 days is found between precipitation and mine discharge, which corresponds to pressure pulse propagation and not to the actual advective flow of water. The results also demonstrate the important spatial heterogeneity of the aquifer and indicate that the mine does not behave as a single pool. Assuming porous-medium confined flow, barometric pressure and tidal signals are analyzed to yield mine aquifer properties. The analysis yields estimates of hydraulic conductivity, storage, barometric efficiency, and strain sensitivity. Comparison of the results with the available literature values indicates that the aquifer properties determined in this study have reasonable values. Parameter estimates are used to develop a numerical model of the Corning complex, using MODFLOW. The model simulates observed hydraulic head distributions and mine discharge rates with fair accuracy. The result of the simulations shows that 45% of the inflow to the mine complex derives from the surrounding coal strata, including detached mines. Travel time for water captured at subsidence captures is found to exceed 10 years, because of low gradients. It is finally concluded that a combination of time series analysis, barometric analysis and numerical modeling can provide useful information about the hydrogeology of a mine system prior to a large-scale and expensive in-situ remediation design. Advisors/Committee Members: Stoertz, Mary (Advisor).

Subjects/Keywords: Geological Survey; Time Series Analysis; Barometric and Tidal Analysis; Flow Modeling; MODFLOW; Underground Coal Mines; Acid Mine Drainage; Cornin Mine Complex; Southeast, Ohio

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APA (6^th Edition):

Sahu, P. (2004). Use of Time Series, Barometric and Tidal Analyses to Conceptualize and Model Flow in an Underground Mine: The Corning Mine Complex, Ohio. (Masters Thesis). Ohio University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1108395116

Chicago Manual of Style (16^th Edition):

Sahu, Parameswar. “Use of Time Series, Barometric and Tidal Analyses to Conceptualize and Model Flow in an Underground Mine: The Corning Mine Complex, Ohio.” 2004. Masters Thesis, Ohio University. Accessed April 10, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1108395116.

MLA Handbook (7^th Edition):

Sahu, Parameswar. “Use of Time Series, Barometric and Tidal Analyses to Conceptualize and Model Flow in an Underground Mine: The Corning Mine Complex, Ohio.” 2004. Web. 10 Apr 2021.

Vancouver:

Sahu P. Use of Time Series, Barometric and Tidal Analyses to Conceptualize and Model Flow in an Underground Mine: The Corning Mine Complex, Ohio. [Internet] [Masters thesis]. Ohio University; 2004. [cited 2021 Apr 10]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1108395116.

Council of Science Editors:

Sahu P. Use of Time Series, Barometric and Tidal Analyses to Conceptualize and Model Flow in an Underground Mine: The Corning Mine Complex, Ohio. [Masters Thesis]. Ohio University; 2004. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1108395116

29. Newman, William J. Tungsten mining at the Getchell Mine.

Degree: 1955, University of Nevada – Reno

URL: http://hdl.handle.net/11714/1559

No abstract provided.

Subjects/Keywords: mining; Getchell Mine; tungsten; Humboldt County; Nevada; Potosi Mining District; ore deposits; open pit mining; underground mining; drilling; Mackay Science Project; tungsten mines and mining – Nevada – Humboldt County

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Newman, W. J. (1955). Tungsten mining at the Getchell Mine. (Thesis). University of Nevada – Reno. Retrieved from http://hdl.handle.net/11714/1559

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Newman, William J. “Tungsten mining at the Getchell Mine.” 1955. Thesis, University of Nevada – Reno. Accessed April 10, 2021. http://hdl.handle.net/11714/1559.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Newman, William J. “Tungsten mining at the Getchell Mine.” 1955. Web. 10 Apr 2021.

Vancouver:

Newman WJ. Tungsten mining at the Getchell Mine. [Internet] [Thesis]. University of Nevada – Reno; 1955. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/11714/1559.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Newman WJ. Tungsten mining at the Getchell Mine. [Thesis]. University of Nevada – Reno; 1955. Available from: http://hdl.handle.net/11714/1559

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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