L115机道安全距离确定与边坡稳定性研究  

Research on safety distance determination of L115 roadway and slope stability

作　　者：高明强 GAO Mingqiang(Zhaluteqi Zhahanao'er Coal Industry Co.,Ltd.,Zhaluteqi 029100,China)

机构地区：[1]扎鲁特旗扎哈淖尔煤业公司,内蒙古通辽029100

出　　处：《露天采矿技术》2021年第3期19-21,25,共4页Opencast Mining Technology

摘　　要：以扎哈淖尔露天煤矿排土场、L115机道沟边坡为工程实例,基于有限元法应力-应变和有限元边坡稳定性分析,探讨了不同安全距离下排土场对机道沟变形影响和边坡稳定性研究。结果表明:随着L115机道沟开挖位置与排土场安全距离增加,排土场变形量和开挖位置变形明显减少;确定了机道开挖位置距离排土场最佳安全距离为450 m,距离地表境界150 m;根据有限元边坡数值模拟结果,对L115机道沟开挖边坡进行了边坡稳定性评价,确定了其边坡形态和边坡角度为17°。Taking Zahanao’er Open-pit Coal Mine dump and the slope of L115 road trench are as engineering examples,based on the finite element method stress-strain and finite element slope stability,the article discusses the influence of dumps on the deformation of the road and the slope stability under different safety distances.The results show that as the excavation position of the L115 road trench and dump safe distance increase,the amount of dump deformation and the deformation of the excavation position has been significantly reduced.The article determines that the optimal safe distance between the excavation position of the machine road and the dump is 450 m,and the distance from the surface boundary is 150 m.According to the numerical simulation results of the finite element slope,we carry out the slope stability evaluation on the excavation slope of the L115 road trench and determine its slope shape and slope angle 17°.

关 键 词：L115机道沟 边坡稳定性 SIGMA/W软件 安全距离 变形破坏 

分 类 号：TD824.7[矿业工程—煤矿开采]