露天矿高陡边坡稳定性数值模拟

Numberical Simulation on Open-pit High and Steep Slope Stability

结合平庄西露天矿工程实例,基于强度折减理论,应用RFPA-SRM模拟了该矿顶帮高陡边坡失稳的动态过程,确定了滑坡模式,同时计算了边坡的稳定性。通过对模拟结果的分析得出:边坡开挖后的失稳破坏是一个渐进的过程,同时存在拉张和剪切两种破坏方式,其根本原因在于边坡岩体所处的应力状态。

According to the actual progress of Pingzhuang Western Open - pit and based on strength reduction method, the dynamic instability processes of the top high and steep slope was simulated,the landslide mode was determined and the stability was calculated with RFPA - SRM.By analysis of the simulated result,it can be known:the landslide or failure of the slope excavated is a gradual process and for the rock mass,the tensile failure and the shear failure exist simultaneously, which depends on the rock stress condition.