Citation

Chen F, Deng J. Yanshilixue Yu Gongcheng Xuebao 2006; 25(12): 2546-2551.

Affiliation

Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China

Copyright

(Copyright © 2006, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences)

DOI

unavailable

PMID

unavailable

Abstract

The strength reduction method (SRM) is mainly used for two-dimensional slope stability analysis. In order to verify its feasibility for the stability analysis of three-dimensional issues, two benchmark problems, i.e. planar slide and wedge slide, are selected; and the safety factors are calculated by SRM. The obtained safety factors agree well to the analytical solutions by E. Hoek and J. W. Brown; and the modeled sliding direction is also almost the same as the hypothetical one. In the analysis, solid elements are used to model the behavior of structural planes, so the influences of their thickness and element intensity on modeling precision are further investigated. For blocks cut by planar structural planes, the influence is limited when the thickness is 1/10-1/200 of the block height. Compared with the displacement criterion of characteristic points, the entirely run-through criterion of plastic zone is more rational for its theoretical coherence to the theory of limit equilibrium and its easy use in application. The stability of a pentahedron block is further analyzed to verify the applicability of the method.