基于不同荷载下的某露天边坡稳定性分析

Stability Analysis of an Open-pit Slope under Different Loads

为了解某露天矿在不同荷载条件下的边坡稳定性问题,采用数值模拟对边坡稳定性进行了分析计算,设置了自重、自重+爆破振动力、自重+地震力3种不同荷载条件,并通过其剪应变分布特征及位移分布特征来反映边坡的稳定性情况。结果表明:不同荷载条件下,模型的区域剪应变值均在可控范围内,且X、Y方向的大部分区域位移值均在一定范围内波动。从模拟结果来看,露天边坡整体稳定性在可控范围内,不会发生大面积边坡滑动及失稳情况,但建议矿山开采过程中加强对边坡的监测预警以保证矿山安全生产。

In order to understand the slope stability of an open-pit mine under different load condi⁃tions,the slope stability was analyzed and calculated by numerical simulation.Three different load condi⁃tions:dead weight,dead weight+blasting vibration force,dead weight+seismic force,respectively.The stability of the slope can be reflected by the distribution characteristics of shear strain and displacement.The results show that under different load conditions,the regional shear strain values of the model are in a controllable range,and most of the regional displacement values in the X and Y directions fluctuate in a certain range.According to the simulation results,the overall stability of the open-pit slope is within the controllable range,and large-scale slope sliding and instability will not occur,but it is suggested to strengthen the monitoring and early warning of the slope during the mining process to ensure the safety of mine production.