抚顺西露天矿深大顺倾边坡失稳破坏控制措施研究  

Research on control measures of instability and failure of deep and large dip slope in Fushun West Open-pit Mine

作　　者：侯成恒 HOU Chengheng(China Coal Technology and Engineering Group Shenyang Research Institute Co.,Ltd.,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：《煤矿安全》2022年第6期236-241,共6页Safety in Coal Mines

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

摘　　要：为解决深大顺倾边坡失稳破坏问题,以抚顺西露天矿为例,通过工程钻探与监测数据追踪分析方法,确定弱层赋存规律及变形边界划定;基于强度折减与反分析法,得出岩土体力学指标;运用极限平衡与三维有限差分法,分析不同内排高度与边坡稳定变化规律;采用监测数据追踪分析,对控制效果评价。结果表明:二维极限平衡与三维有限元分析结果一致性较高,内排高度为80 m时,稳定性满足安全要求,监测数据追踪分析,内排方案可实现对边坡稳定控制。In order to solve the problem of instability and failure of deep antegrade slope,taking Fushun West Open-pit Mine as an example,the occurrence law of weak layer and the delimitation of deformation boundary are determined by engineering drilling and monitoring data tracking analysis method;based on the strength reduction and back analysis method,the mechanical indexes of rock and soil mass are obtained;using limit equilibrium and three-dimensional finite difference method,the variation laws of different internal drainage height and slope stability are analyzed;the monitoring data tracking analysis is used to evaluate the control effect.The results show that the results of two-dimensional limit equilibrium and three-dimensional finite element analysis are highly consistent.When the inner row height is 80 m,the stability meets the safety requirements.The monitoring data are tracked and analyzed,and the inner row scheme can realize the control of slope stability.

关 键 词：深大顺倾边坡 失稳破坏 强度折减 控制措施 追踪分析 

分 类 号：TD824.7[矿业工程—煤矿开采]