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本文以陕西延安印灵山黄土滑坡为研究对象。采用有限元分析软件SIGMA/W对滑坡进行稳定性分析。根据工程实际情况,对坡脚开挖前后的新老滑坡稳定性计算,对比SIGMA/W对开挖前后的位移场和塑性区分布,来分析坡脚开挖对滑坡的影响。结果表明:坡脚开挖对滑坡稳定性产生一定影响,导致前缘位移增大,出现应力集中,从而导致滑坡的发生
In this paper, the Yingshan loess landslide in Yan’an, Shaanxi Province is taken as the research object. The stability analysis of landslide is carried out by using the finite element analysis software SIGMA / W. According to the actual situation of the project, the stability of the old and new landslides before and after the excavation of the foot of slope is calculated, and the influence of slope excavation on the landslide is analyzed comparing the distribution of displacement field and plastic zone before and after excavation by SIGMA / W. The results show that the excavation of slope foot has an impact on the stability of the landslide, resulting in the increase of the leading edge displacement and the stress concentration, resulting in the occurrence of the landslide