Improvement of Laboratory Protocols for Discontinuity Geomechanical Characterization and Investigation of the Effect of Saturation on Granite Strength
Loading...
Authors
Ahmed Labeid, Mariem Tahra
Date
Type
thesis
Language
eng
Keyword
Granite , Direct shear test , Joint normal stiffness , Joint shear stiffness , Triaxial compressive strength test (TCS) , Brazilian tensile strength test (BTS) , Water-saturation , Uniaxial compressive strength test (UCS) , Saw-cut granite joints , Stick-slip behaviour
Alternative Title
Abstract
The Nuclear Waste Management Organization of Canada (NWMO) is currently in the process of site selection for the future development of a high-level nuclear waste Deep Geological Repository (DGR), and locations with crystalline bedrock are the top candidates (Hirschorn et al. 2017). In support of this process, a study on the effects of water-saturation on the geomechanical response of granitic rock is conducted. Rock-water interactions are investigated in both intact rock and discontinuities. This topic was investigated on two different granites: Lac du Bonnet and Pointe du Bois pink granites. The results of this study show no significant correlations between strength reduction and water content in granite in compression, tension, and confined shear. In addition to the investigation of rock-water interactions, this work also presents the development of a new direct shear sample preparation procedure as well as a technique for normal loading and direct shear test data processing and interpretation: joint deformation correction and analytical representation of joint pre-yield deformation. An exponential function is suggested to determine the instantaneous normal and shear stiffness values.
Description
Citation
Publisher
License
CC0 1.0 Universal
Queen's University's Thesis/Dissertation Non-Exclusive License for Deposit to QSpace and Library and Archives Canada
ProQuest PhD and Master's Theses International Dissemination Agreement
Intellectual Property Guidelines at Queen's University
Copying and Preserving Your Thesis
This publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner.
Queen's University's Thesis/Dissertation Non-Exclusive License for Deposit to QSpace and Library and Archives Canada
ProQuest PhD and Master's Theses International Dissemination Agreement
Intellectual Property Guidelines at Queen's University
Copying and Preserving Your Thesis
This publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner.