陷落柱影响下露天矿端帮边坡稳定性分析及防治对策

Side slope stability analysis and prevention countermeasures of open pit mine under the influence of collapse column

以安太堡露天矿南帮为研究对象,综合考虑陷落柱赋存于南帮而导致边坡岩体强度降低,岩性构成与产状发生变化,采用模拟计算仿真软件Geo Studio对陷落柱影响下南帮边坡的稳定性进行了模拟分析,划定了边坡不稳定区域,并结合现场实际情况,提出了内排压脚的控制措施。结果表明,内排压脚措施有效提高了南帮边坡的稳定性,同时增大了露天矿排土容量,缩短了排土运距,对露天矿安全生产具有重要的实际意义。

The south slope in Antaibao Open-pit Mine is taken as research object,and the strength decrease,formation and occurrence change of rock mass in slope is considered,with collapse column occurring in south slope,stability of the south slope is simulated and analyzed under the effect of collapse column with Geo Studio,the unstable region of slope is delineated,and the control measures are proposed using inner-dumping to stabilize slope.The results show that,the control measure is effective,and the discharge capacity of open pit mine is increased,which shortens the distance of dumping,and is of important practical significance for the safety production of open pit mine.