岩土力学2012，Vol.33Issue(2)：449-452,475,5.
不同安全系数对应的边坡滑动面位置分析
Analysis of location distribution of slope slip plane with different factors of safety
摘要
Abstract
In order to study the relationship between safety factor of slope and its slip plane during the slope stability calculation by strength reduction method, the theoretical deduction and numerical calculation of strength reduction method by FLAC3D are done. The safety factor and location of slip plane for slope are analyzed for a homogeneous slope with the variation of cohesion c and friction angle q>. The analysis results show that (1) the safety factor of slope is influenced by anyone of cohesion and friction angle, but the location pf slip plane is instead influenced by the combination function of c and , which has the formula of λc = c/(yh tanφ), where h is the height of slope; (2) when λc equals to a'constant, the locations of slip plane will not change by the variation of shear parameters c and ; with the increase of λc, the failure mode of slope changes from shallow slippage to deep slippage, the slip plane becomes more and more smooth while the top of it moves farther away from the vertex of slope, and slipping volume becomes greater.关键词
边坡/强度折减/滑动面/强度参数/数值分析Key words
slope/ shear strength reduction/ slip plane/ strength parameters/ numerical analysis分类
建筑与水利引用本文复制引用
张昊,余巍伟,林杭,柳群义..不同安全系数对应的边坡滑动面位置分析[J].岩土力学,2012,33(2):449-452,475,5.基金项目
湖南省自然科学基金资助项目(No.11JJ4043) （No.11JJ4043）
中南大学自由探索计划资助(No.2011(Q)NZT086) （No.2011(Q）
长沙理工大学道路灾变防治及交通安全教育部工程研究中心开放基金资助项目(No.KFJ100306). （No.KFJ100306）
