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根据碾子沟煤矿土质高边坡再次失稳的情况,结合现场勘察资料,对滑坡失稳原因进行了分析。运用ABAQUS有限元分析软件并采用抗剪强度折减系数法进行了数值计算,得出了土体在饱和状态下的安全系数及滑动面等参数,并分析了滑坡潜在的破坏过程。根据相关规范规定,运用折线滑动面及传递系数法隐式解的概念对滑体下滑力进行了计算,为优化设计提供依据。通过优化支护结构设计,减少了降雨对边坡的不利影响,遏制了滑坡变形。
According to the fact that the high slope of the soil in the Nianzigou coal mine is once again unstable and the site investigation data are combined, the reasons of landslide instability are analyzed. The ABAQUS finite element analysis software was used and the shear strength reduction coefficient method was used to calculate the safety factor and the sliding surface parameters under saturated condition. The potential failure process of the landslide was analyzed. According to relevant regulations, the sliding force of sliding body is calculated by using the concept of polyline sliding surface and the implicit solution of transfer coefficient method, which provides the basis for optimal design. By optimizing the design of the supporting structure, the negative influence of rainfall on the slope is reduced, and the landslide deformation is suppressed.