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某工程边坡为典型的岩质高陡开挖边坡,其稳定性对工程的安全施工和后期运行影响重大。为分析分层开挖对高边坡安全系数的影响,本研究建立了高边坡的三维有限元模型,应用ANSYS软件数值模拟了开挖过程,进行了稳定性分析计算。结果表明:对于处于临界稳定状态、滑坡体安全余度很小的高陡岩质边坡,分层开挖滑坡体,可提高边坡整体安全系数,对于边坡的稳定有一定的提高,但是考虑到降雨及地震等情况的发生,为获得安全盈余,建议进行加固。
A project slope is a typical high-steep rock slope excavation, and its stability has a significant impact on the safe construction and post-operation of the project. In order to analyze the influence of stratified excavation on the safety factor of high slope, a three-dimensional finite element model of high slope was established in this study. The ANSYS software was used to simulate the excavation process and the stability analysis was carried out. The results show that for the high and steep rock slopes which are in a critical stable condition and the safety margin of the landslide body is very small, the stratified excavation of the landslide body can increase the overall safety factor of the slope and improve the stability of the slope, Taking into account the occurrence of rainfall and earthquakes, in order to obtain a safety surplus, it is recommended to reinforce.