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You searched for id:"handle:10388/12569". One record found.

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1. Shacker, Dylan R 1985-. Research into the interpretation of deformation measured by extensometers.

Degree: 2020, University of Saskatchewan

This thesis interprets data collected by extensometers installed to monitor underground excavations in open stope mining environments. The interpretation of the extensometer data includes assessment of the measurements to determine the validity of the data and if the measurements are suitable for use in estimation of stress and/ or a geometry of potential instability. A new method for estimating a change in stress based on the elastic properties of the rock mass and the measured strains is introduced and applied. This method can be applied to estimate the pre-mining stress, normal to an opening, based on the normal strain caused by mining. The recently developed Strain Effective Radius Factor (SERF) method for estimating a potential geometry of instability is reviewed and applied to additional datasets. The SERF method is an empirical tool that can be applied to predict unstable stope hanging wall geometries based on trends in strain measurements. This is a useful development for interpreting the meaning of increasing hanging wall deformation and can provide insights into potential risks of continued stope excavation. This research interprets historic instrumentation datasets from two mining operations and introduces and analyzes a new instrumentation dataset from the Santoy mine in northern Saskatchewan. The two historical instrumentation datasets included stopes with hanging wall instability allowing the estimation of both pre-mining stress and a geometry of instability. The new instrumentation dataset monitored hanging walls without any recorded instability, therefore only the pre-mining stress could be estimated. It was found that pre mining stress could be reasonably estimated. A variation to the SERF method is proposed to improve the prediction of a geometry of instability and appears promising based on its application to a limited number of case histories. Advisors/Committee Members: Milne, Douglas, Hawkes, Christopher, Ferguson, Grant, Hatley, James.

Subjects/Keywords: Rock mechanics; Open stope; SERF; Hanging wall; Extensometer; Stress

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APA (6th Edition):

Shacker, D. R. 1. (2020). Research into the interpretation of deformation measured by extensometers. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/12569

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

Chicago Manual of Style (16th Edition):

Shacker, Dylan R 1985-. “Research into the interpretation of deformation measured by extensometers.” 2020. Thesis, University of Saskatchewan. Accessed February 28, 2020. http://hdl.handle.net/10388/12569.

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

MLA Handbook (7th Edition):

Shacker, Dylan R 1985-. “Research into the interpretation of deformation measured by extensometers.” 2020. Web. 28 Feb 2020.

Vancouver:

Shacker DR1. Research into the interpretation of deformation measured by extensometers. [Internet] [Thesis]. University of Saskatchewan; 2020. [cited 2020 Feb 28]. Available from: http://hdl.handle.net/10388/12569.

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

Council of Science Editors:

Shacker DR1. Research into the interpretation of deformation measured by extensometers. [Thesis]. University of Saskatchewan; 2020. Available from: http://hdl.handle.net/10388/12569

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

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