地下空区扰动下露天边坡稳定性分析及对策  

Open pit slope stability analysis and countermeasures in disturbance of goaf

作　　者：张云鹏[1] 杨曦[1] 李岩[1] 

机构地区：[1]华北理工大学河北省矿业开发与安全技术重点实验室,河北唐山063009

出　　处：《化工矿物与加工》2016年第9期51-53,共3页Industrial Minerals & Processing

摘　　要：由于地下采空区等原因的影响,近北庄铁矿露天采场边坡出现了不同程度的变形开裂等失稳现象。采用极限平衡法与有限元法,结合露天边坡的实际情况,对边坡进行稳定性分析,结果表明,边坡安全系数低于边坡安全储备系数,有滑坡的可能。通过削坡减载处理,使边坡安全系数高于边坡安全储备系数1.10,确保采场安全生产,对工程实践具有一定指导意义。Because of the influence of goaf and other reasons, there are deformation instability such as cracking phenomenon in the slope of open pit iron mine in Jinbeizhuang. Combining with the actual situation of open pit slope, the limit equilibrium method and finite element method, we analyze the slope stability. The results show that safety factor of slope is smaller than the safety margin factor and there is the possibility of landslides. By wall cutting and unloading, the safety factor is higher than the safety margin factor of l. 10. That can ensure the safety of stope in production, and has some guiding significance for engineering practice.

关 键 词：极限平衡法 有限元法 边坡稳定性 

分 类 号：TD854.6[矿业工程—金属矿开采]