极限平衡法对边坡整体和局部稳定性评价

Evaluation of Integral and Local Stability of Slope by Limit Equilibrium Method

本文以岑溪市某边坡为研究对象,在运用极限平衡法(简化毕肖普法)对边坡天然工况及暴雨工况稳定性分析的基础上,对比边坡坡向中轴和侧翼稳定性评价,研究影响边坡稳定性的因素,结果表明:对于中轴方向已稳定的边坡,人们往往容易忽略侧翼局部的不稳定性,由于侧翼人类切坡建房工程活动等因素,局部比整体易滑。

In this paper,a slope in Cenxi City is taken as the research object.Based on the stability analysis of the slope under natural conditions and rainstorm conditions by using the limit equilibrium method(simplified Bishop method),the factors affecting the stability of the slope are studied by comparing the stability evaluation of the side slope along the central axis and the flank.The results show that:For the slope which has been stabilized in the central axis direction,people tend to ignore the local instability of the flank.Due to the factors such as the activities of human slope cutting construction on the flank,the local slope is easier to slide than the whole.