露天矿扩界工程露天坑及排土场边坡协同稳定性分析  

Collaborative stability analysss of open-pit and waste dump slope in open-pit expansion project

作　　者：张长锁 刘建博 ZHANG Changsuo;LIU Jianbo(BGRIMM Technology Group,Beijing 100160,China)

机构地区：[1]矿冶科技集团有限公司,北京100160

出　　处：《矿冶》2024年第1期116-123,共8页Mining And Metallurgy

摘　　要：采用极限平衡法对某露天矿扩界后露天采场和排土场形成的联合边坡进行不同工况条件下的稳定性分析。结果表明:扩界后在排土场与采场之间预留出足够安全距离后,排土场对露天采场边坡的稳定性影响较小;露天采场-排土场联合边坡中采场边坡在自重+地下水、自重+地下水+爆破振动力、自重+地下水+地震力三种工况下均满足安全系数要求,采场边坡处于稳定状态;露天采场-排土场联合边坡中排土场边坡在自重、自重+降雨、自重+地震三种工况下均满足安全系数要求,排土场边坡处于稳定状态。说明该露天矿扩界方案形成的联合边坡具有安全性,可保障矿山的生产安全。The limit equilibrium method is used to analyze the stability of the ioint slope formed by the open-pit mining area and the waste disposal area after the expansion of a certain mine under different working conditions.The results show that a sufficient safe distance between the dumping site and the mining site is reserved after expanding the boundary,the impact of the dumping site on the stability of the open-pit mining slope is relatively small.In the ioint slope of open-pit mining site and waste disposal site,the mining site slope meets the safety factor requirements under three working conditions:self weight+groundwater,self weight+groundwater+blasting vibration force,and self weight+groundwater+seismic force,and the mining site slope is in a stable state.The ioint slope of open-pit mining site and waste dump meets the safety factor requirements under three working conditions:self weight,self weight+rainfall,and self weight+earthquake,and the waste dump slope is in a stable state.The ioint slope formed by the expansion plan of the mine has safety and can ensure the production safety of the mine.

关 键 词：露天采场 排土场 边坡稳定性 极限平衡法 

分 类 号：TD857[矿业工程—金属矿开采]