露天矿爆破影响区排土场稳定性分析  

Stability Analysis of Dump in Area Affected by Open Pit Blasting

作　　者：孟宪雷 张成成 MENG Xian-lei;ZHANG Cheng-cheng(Shenyang Nonferrous Metallurgy Design&Research Institute Co.,Ltd.,Shenyang 110003,China)

机构地区：[1]沈阳有色冶金设计研究院有限公司,辽宁沈阳110003

出　　处：《有色矿冶》2024年第4期16-20,39,共6页Non-Ferrous Mining and Metallurgy

摘　　要：依托于某铜-钼矿115 m排土场项目,选择典型剖面,分别采用简化毕肖普法,M-P法,针对自然工况、暴雨工况、地震工况、爆破工况下的边坡进行了稳定性分析。其中地震工况和爆破工况,均采用等效静力法,将振动等效为水平力。将新-旧堆积剥离物界面、剥离物与原地层界面,作为指定的滑裂面,分别采用显式和隐式剩余下滑力法求解其安全系数。分析结果表明,爆破振动所等效的水平力远大于地震。同等条件下,爆破工况的安全系数明显低于其他工况。适当降低爆破影响区内边坡坡度,是有必要的。The stability analysis of the slope under natural conditions,rainstorm conditions,earthquake conditions and blasting condi‐tions is carried out by using simplified Bishop method and M-P method respectively,based on the project of 115 m high secondary dump in a copper-molybdenum mine.The equivalent static method is used in both seismic and blasting conditions,and the vibration is equivalent to the horizontal force.In this paper,the explicit residual sliding force method and the implicit residual sliding force method are used to calculate the safety factor of the new and old deposit stripping along the interface and the interface between the stripping and the original formation as the designated slip surface.The analysis results show that the equivalent horizontal force of blasting vibration is much greater than that of earthquake.It is absolutely necessary to properly reduce the slope slope in the area af‐fected by blasting.

关 键 词：排土场 边坡稳定 爆破振动 

分 类 号：TD235.3[矿业工程—矿井建设]