基于FLAC3D的平朔东露天矿南帮滑坡区稳定性分析

Stability analysis of south slope landslide area in Pingshuo east open-pit mine based on FLAC3D

对东露天矿南帮滑坡区域治理方案采用FLAC3D进行数值模拟分析,得出当南帮滑坡区经过优化治理后,经强度折减,南帮优化后边坡的位移量很小,满足边坡稳定性要求,证明边坡优化合理,同时根据滑坡的力学成因机制类型为推动式,滑坡模式主要为以煤层底板弱层为底界面的切层-顺层滑动,边坡岩体的破坏形式为拉-剪复合型。

FLAC^3D is used to simulate and analyze the regional treatment scheme of south landslide in east open-pit mine.It is concluded that the strength of south landslide area is reduced after optimized treatment.After optimization,the displacement of the slope is very small,which meets the stability requirements of the slope and proves that the optimization of the slope is reasonable.At the same time,according to the mechanical mechanism type of the landslide,the landslide mode is mainly the shear-bedding sliding with the weak layer as the bottom interface of the coal seam floor,and the failure mode of the slope rock mass is the tension-shear composite type.