该矿西帮边坡变形破坏的主要形式是滑坡，运用ｓａｒｍａ～ｍｏｎｔｅｃａｒｌｏ模拟预测该边坡的稳定性：正常水位下该边坡稳定系数为０８９～０９２，破坏概率为８５％～８７％，属不稳定边帮；当坡体排水达１００％时，稳定系数为１０８～１１２，破坏概率为３５％～３８％。 The main form of deformation and failure of the west slope of the mine is landslide. The stability of the slope is predicted by sarma ~ montecarlo simulation. The stability coefficient of the slope under normal water level is 089 ~ 092 and the failure probability is 85% ~ 87%, belonging to the unstable side; when the slope drainage reaches 100%, the stability coefficient is 108 ~ 112, the failure probability is 35% ~ 38%.