Shear strength of rock joints under constant normal loading conditions

Mirzaghorbanali, Ali and Alenzi, Faizal and Gregor, Peter and Aziz, Naj and McDougall, Kevin (2019) Shear strength of rock joints under constant normal loading conditions. In: 2019 Coal Operators' Conference, 18-20 Feb 2019, Wollongong, NSW, Australia.

Abstract

The variation of shear strength of rock joints under constant normal loading conditions was studied. Three dimensional printing technology was incorporated to produce moulds of rock joints. Rock joints samples with three different roughness values were cast using concrete with uniaxial compressive strength of 20 MPa. Samples were sheared using a direct shear testing machine for normal stress values ranging from 0.25 to 0.7 MPa. In addition, effects of shear rate on shear strength properties of rock joints were experimentally investigated. It was found that the shear strength of rock joints is a function of normal stress, joint roughness and shear rate values. In addition, it was shown that three dimensional printing technology is a useful tool to replicate real rock joints.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: No paper in these proceedings is to be re-published unless with written permission from the conference organisers and/or the original authors who maintain the copyright for their work.
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Date Deposited: 05 Aug 2019 23:29
Last Modified: 05 Aug 2019 23:38
Uncontrolled Keywords: rock joints, shear strength, constant normal loading conditions, three dimensional printing
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090501 Civil Geotechnical Engineering
09 Engineering > 0914 Resources Engineering and Extractive Metallurgy > 091402 Geomechanics and Resources Geotechnical Engineering
09 Engineering > 0914 Resources Engineering and Extractive Metallurgy > 091405 Mining Engineering
URI: http://eprints.usq.edu.au/id/eprint/36601

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