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Directly searching method for slip plane and its influential factors based on critical state of slope 总被引:3,自引:1,他引:2
In order to determine the slip plane of slope directly by the calculation results of strength reduction method, and analyze
the influential factors of slope stability, a numerical model was established in plane strain mode by FLAC3D for homogeneous
soil slope, whose parameters were reduced until the slope reached the critical state. Then FISH program was used to get the
location data of slip plane from displacement contour lines. Furthermore, the method to determine multiple slip planes was
also proposed by setting different heights of elastic areas. The influential factors for the stability were analyzed, including
cohesion, internal friction angle, and tensile strength. The calculation results show that with the increase of cohesion,
failure mode of slope changes from shallow slipping to the deep slipping, while inclination of slip plane becomes slower and
slipping volume becomes larger; with the increase of friction angle, failure mode of slope changes from deep slipping to shallow
slipping, while slip plane becomes steeper and upper border of slip plane comes closer to the vertex of slope; the safety
factor increases little and slip plane goes far away from vertex of slope with the increase of tensile strength.
Foundation item: Project(20060533071) supported by the Doctoral Program Foundation of Higher Education of China; Project (20060400264) supported
by China Postdoctoral Science Foundation; Project (50774093) supported by the National Natural Science Foundation of China;
Project (1343-74236000014) supported by Graduate Student Innovation Foundation of Hunan Province, China 相似文献
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