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https://hdl.handle.net/2440/126493
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Type: | Journal article |
Title: | Joint elasticity effect on the failure behaviours of rock masses using a discrete element model |
Author: | Yuan, Y. Zhou, C. Wang, Z. Du, J. |
Citation: | Energies, 2018; 11(11):2968-1-2968-14 |
Publisher: | MDPI |
Issue Date: | 2018 |
ISSN: | 1996-1073 1996-1073 |
Statement of Responsibility: | Yong Yuan, Changtai Zhou, Zhihe Wang and Jifang Du |
Abstract: | It is widely accepted that the mechanical properties and failure behaviours of a rock mass are largely dependent upon the geometrical and mechanical properties of discontinuities. The effect of joint elasticity on the failure behaviours of rock masses is investigated using a discrete element model, namely, the synthetic rock mass model. Here, uniaxial compression tests of the numerical model are carried out for the rock mass model with a persistent joint to analyse the role of joint elasticity in the failure process with various joint orientations, β. A strong correlation between the joint elasticity and failure strength is found from the simulation results: a positive relationship when the joint orientation β<φj; a negative relationship when the joint orientation φj<β<90∘ ; and a very limited effect when the joint orientation β=90∘ . Additionally, it is shown that the joint elasticity is the governing factor in the transition of failure modes, especially from the sliding failure mode along the joint to the mixed sliding-tensile failure mode. |
Keywords: | Anisotropy; discrete element model; joint stiffness; Jaeger’s criterion |
Rights: | © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
DOI: | 10.3390/en11112968 |
Published version: | http://dx.doi.org/10.3390/en11112968 |
Appears in Collections: | Aurora harvest 4 Civil and Environmental Engineering publications |
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