Comprehensive analysis of slope stability based on limit equilibrium method and finite element method
GUO Ziyu
WANG Yong
LI Xiaoju
WANG Hui
Abstract：In order to study the slope stability under the influence of weak layers in soft rock slopes,and establish a slope model containing weak layers,the article uses limit equilibrium method and finite element method to simulate the slope stability under the influence of weak layers,and explores various evaluation indicators to comprehensively describe the slope stability state.The results show that through finite element method calculation,when the weak layer is retained,the slope stability coefficient is less than 1,and the slope model is connected by shear strain bands.The bottom of the weak layer is sheared out,and the upper part shows a sliding trend.The slope failure mode is a sliding shear type.After removing some weak layers,the stability coefficient of the slope is greater than 1.3,and the shear strain band does not extend through the entire slope model.Using the limit equilibrium method to calculate slope stability,the slip arc is basically consistent with the shear strain band of the finite element method,thus verifying the accuracy of the calculation model.
Keywords：soft rock slopestrength reduction methodfinite element methodlimit equilibrium methodslope stability coefficient
Publication Date：2023-12-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 45-47,51 )