Research on 2D Limit Equilibrium Method of Slopes Considering the Effect of Horizontal In Situ Stress

Abstract:

At present, in-situ stress was not considered in Limit Equilibrium Method (LEM) of slopes, the influence of in-situ stress is very small on the stability of conventional slopes, but in deep-depressed open-pit mines, the influence should not be neglected. Formula for calculating the Factor of Safety (FOS) under the effect of horizontal in-situ stress was deduced using General Slice Method (GSM) of two-dimensional (2D) limit equilibrium method in this paper，a corresponding program SSLOPE was built, and the software was used in a deep- depressed open-pit iron mine. The results show that the FOS of the slope decreased by 20% when horizontal in-situ stress is considered, some reinforcements must be taken. Therefore, the influence of in-situ stress on slope stability should be taken into account in deep open –pit mines.

• Periodical: Advanced Materials Research (Volumes 671-674)
• Pages: 245-250
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.671-674.245
• Online since: March 2013
• Authors: Wen Hui Tan, Ya Liang Li, Cong Cong Li
• Keywords: Factor of Safety (FOS), General Slice Method (GSM), In Situ Stress, Limit Equilibrium Method (LEM), Slope

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DOI: 10.1201/b11438-195

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