基于强度折减法的露天矿边坡稳定性分析

Final Slope Stability Analysis Based on Strength Reduction Method in an Open Pit Mine

为研究广东大纱帽露天矿终了边坡稳定性,基于强度折减法,利用RS2软件建模并计算分析边坡稳定性系数。结果表明:三种工况下各分区边坡的稳定性系数均大于规范要求的许用安全系数,该露天花岗岩矿山终了边坡处于稳定状态;分区B在三种工况下的稳定系数均比其他分区小,在实际边坡安全管理中应重点关注B分区的边坡稳定;在日常管理中,应加强采场爆破作业后边坡巡检。

In order to study the stability of the slope at the end of mining,based on the strength reduction method,RS2 software is used to model and calculate the slope stability coefficient,the results show that:(1)the stability coefficient of the slope is larger than the allowable Factor of safety required by the code,and the slope is in a stable state at the end of the open-pit Granite Mine;(2)the stability coefficient of sub-area B is smaller than that of other sub-areas under three working conditions,so we should pay more attention to the stability of sub-area B in actual slope safety management,the inspection of slope after blasting should be strengthened.