Study on Post-Failure Deformation and Residual Strength of Rock Mass Based on Hoek-Brown Criterion

Abstract:

In order to predict the stability of surrounding rock mass in geotechnical engineering, it is important to study the post-failure deformation property and residual strength of rock mass. Based on evolutional behavior of strength parameters, aiming at generalized Hoek-Brown strength criterion, selecting major principal strain as strain softening parameter, this paper presents the method of solving post-failure stress-strain curve . In numerical case, the effect of evolutional law of strength parameters ， and to deformation and residual strength is discussed and we can draw the following conclusions: the greater the residual values of ， are and the smaller the residual value of is, the post-failure strain softening curve falls more gently and the greater the residual strength is.

• Periodical: Applied Mechanics and Materials (Volumes 170-173)
• Pages: 121-124
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.170-173.121
• Online since: May 2012
• Authors: Jian Xin Han, Xing Hua Tong, Lei Wang, Guo Fu Sun
• Keywords: Hoek-Brown Criterion, Post-Failure Deformation, Residual Strength, Strength Parameter Evolution

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DOI: 10.1002/nag.315

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