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《Chinese Journal of Rock Mechanics and Engineering》 2010-S1
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ANALYSIS OF SLOPE STABILITY UNDER SEEPAGE BY USING ABAQUS PROGRAM

ZHANG Xiaoyong,DAI Zihang (Institute of Geotechnical Engineering,Fuzhou University,Fuzhou,Fujian 350108,China)  
In order to analyze the slope stability under seepage,the coupling effect of seepage field and stress field needs to be considered.The ABAQUS finite element program has good coupling analysis function of deformation and seepage,and the seepage field can be coupled with the stress field directly.So the ABAQUS finite element program which is combined with strength reduction technique was used to analyze the slope stability under seepage,and the safety factors of slope stability were obtained.The shapes and positions of seepage of saturated surfaces and the most dangerous slip surfaces could be revealed by using the strong post processing functions of ABAQUS program.To verify the accuracy of this method,it was compared with the Sweden slice method and simplified Bishop method that both were based on the traditional limit equilibrium theory.The engineering example showed that the strength reduction FEM based on the software ABAQUS could overcome the disadvantages of the traditional limit equilibrium methods,and its results were more reasonable and reliable.This method was effective to analyze the complicated problem of slope stability under seepage,and the conclusions could provide references to the engineering practice.Meanwhile,the influences of the permeability of soil on the positions of seepage of saturated surfaces and slope stability were made a mass of analysis and comparison,and the calculation indicated that choosing finite element model borders influenced the positions of seepage of saturated surfaces and slope stability.So finite element modeling should choose calculation borders reasonably.
【Fund】: 国家自然科学基金资助项目(50678038);; 福建省高等学校新世纪优秀人才支持计划项目(TM2006-30)
【CateGory Index】: TU463
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