含顺倾煤层软岩边坡滑动区稳定性分析与工程治理实践  

Stability Analysis and Engineering Control of Sliding Zone in Soft Rock Slope along Inclined Coal Seam

作　　者：曹兰柱[1] 王炎舜 赵立春 王东[1] 宋子岭[1] CAO Lanzhu;WANG Yanshun;ZHAO Lichun;WANG Dong;SONG Ziling(Mining College,Liaoning Technical University,Fuxin 123000,China;Zahnur Coal Industry Co.,Ltd.,Jarud Qi 029200,China)

机构地区：[1]辽宁工程技术大学矿业学院,辽宁阜新123000 [2]扎哈淖尔煤业有限公司,内蒙古扎鲁特旗029200

出　　处：《矿业安全与环保》2018年第5期74-77,共4页Mining Safety & Environmental Protection

基　　金：国家自然科学基金项目(51104084;51474119);国家自然科学基金重点项目(U1361211);高等学校博士学科点专项基金项目(20122121110003)

摘　　要：针对顺倾煤层软岩边坡滑动现状,结合GPS监测数据,研究了其滑动机理与工程治理措施。结果表明,软岩边坡滑动机理为滑体前缘剪出,滑体后缘产生张拉裂隙,中部主滑段切断岩层沿弱层产生切层—顺层滑动。运用SLOPE/W软件及监测数据进行了滑动区边坡工程治理前、后的稳定性评价,评价结果表明:治理前其滑动区边坡稳定系数为0.976、0.996,监测位移逐渐增大,说明其处于不稳定状态;实施工程治理措施后,达到了安全储备系数1.2的要求,监测位移趋于近水平,说明工程治理措施选择方法恰当,可为其他顺倾煤层软岩边坡滑动变形及治理措施选择提供指导。According to the sliding status of soft rock slope along inclined coal seam,the sliding mechanism and engineering control measures were studied in combination with GPS monitoring data.The results show that the sliding mechanism is that the leading edge of the sliding body is cut out,the trailing edge of the sliding body generates tensioning cracks,and the cut rock layer along the weak layer in the middle sliding section produces the stratification and bedding sliding.The SLOPE/W software and monitoring data were used to evaluate the stability before and after the sliding area slope engineering treatment.The evaluation results show that the stability coefficient of the sliding slope before treatment is 0.976 and 0.996,and the monitoring displacement gradually increases,indicating that it is unstable.After the project management,the safety reserve coefficient of 1.2 has been reached and the displacement of monitoring tends to be close to horizontal.It shows that the selection of engineering management measures is appropriate,which provides guidance for the sliding deformation of soft rock slope along coal seams and the selection of treatment measures.

关 键 词：露天煤矿 顺倾煤层 软岩边坡 边坡稳定性 极限平衡与有限应力法 GPS监测 

分 类 号：TD824.7[矿业工程—煤矿开采]