白音华四号露天矿含断层逆倾边坡形态优化  

Optimization of the fault-inclined slope shape in Baiyinhua No.4 open-pit mines

作　　者：杨冠东 YANG Guandong(China Coal Group Shanxi Huayu Energy Co.,Ltd.,Shuozhou 036900,China;Liaoning Technical University,Fuxin 123000,China)

机构地区：[1]中煤集团山西华昱能源有限公司,山西朔州036900 [2]辽宁工程技术大学,辽宁阜新123000

出　　处：《露天采矿技术》2019年第2期59-62,共4页Opencast Mining Technology

基　　金：国家自然科学基金资助项目(51104084);国家自然科学基金重点资助项目(U1361211)

摘　　要：白音华四号露天矿首采区西端帮为逆倾层状边坡,受坡体内顺倾断层及弱层双重影响,开采过程中存在滑坡风险。为保障采剥作业安全,开展了西端帮边坡稳定性研究工作。选取西端帮断层区的典型工程地质剖面作为研究对象,基于数值模拟,分析研究边坡变形破坏机制及潜在滑坡模式;基于刚体极限平衡法,对边坡稳定性进行定量分析。研究结果表明:边坡的滑移模式为圆弧、断层为侧界面,弱层为底界面的切层顺层滑动;边坡形态优化设计结果:三系底板弱层以上边坡角为18°,优化后的整体边坡角为23°。The west end slope of Baiyinhua No.4 Open-pit Mine is an inverted layered slope.Affected by downdip faults and weak layers in the slope,there is landslide risk in mining process.In order to ensure the safety of mining and stripping operation,the mine carries out the stability research work of western end slope.The typical engineering geological section in the fault area of the west end slope is selected as the research object,based on numerical simulation,the article analyzes mechanism of slope deformation and failure and the model of potential landslide,and quantitatively analyzes the stability of slope based on the limit equilibrium method of rigid body.The results show that the sliding mode of the slope is the combination of the circular arc-fault-weak layer;the results of slope shape optimization design are as follows:the optimized slope angle above the three system plate weak layer is 18°,optimized overall slope angle is 23°.

关 键 词：露天矿 边坡稳定性 滑移模式 断层效应 边坡形态优化 

分 类 号：TD824.7[矿业工程—煤矿开采]