某露天矿东排土场边坡稳定性分析  

Slope stability analysis of eastern dump in the open-pit mine

作　　者：张东旭 ZHANG Dongxu(China Coal Technology and Engineering Group Shenyang Research Institute,Fushun 113122,China;State Key Laboratory of Coal Mine Safety Technology,Fushun 113122,China)

机构地区：[1]中煤科工集团沈阳研究院有限公司,辽宁抚顺113122 [2]煤矿安全技术国家重点实验室,辽宁抚顺113122

出　　处：《露天采矿技术》2021年第3期115-117,共3页Opencast Mining Technology

基　　金：国家重点研发计划资助项目(2017YFC1503106);中国煤炭科工集团有限公司科技创新创业资金专项资助项目(2019-ZD004)。

摘　　要：为查明某露天矿东排土场现状边坡稳定性状态,为后续排土工程发展提供指导,基于对东排土场边坡工程地质条件分析与认识,首先采用有限差分数值模拟手段对东排土场边坡的最危险破坏模式进行分析,然后采用极限平衡分析法对东排土场现状边坡进行安全评价。结果表明:该露天矿东排土场的最危险破坏模式为单台阶圆弧滑动;鉴于边坡稳定性较好,且现有边坡角度和高度都小于设计值,可满足矿山排弃要求;提出了配套安全措施,为露天矿排土工程发展提供了指导。In order to find out the current slope stability state of eastern dump in the open-pit mine and provide guidance for the development of subsequent dump engineering,based on the analysis and understanding of the slope engineering geological conditions of the dump,the article analyzes the most dangerous failure mode of the dump slope by using finite difference numerical simulation method,and uses the limit equilibrium analysis method to evaluate the current dump slope.The results show that the most dangerous failure mode of the eastern dump in the open-pit mine is single step circular arc sliding;in view of the good slope stability,and the existing slope angle and height are less than the design value,which can meet the requirements of mine dumping;the supporting safety measures are put forward,which provides guidance for the development of open-pit mine dumping engineering.

关 键 词：外排土场 边坡 边坡角 有限元分析法 极限平衡分析法 排弃 

分 类 号：TD824.7[矿业工程—煤矿开采]