三道岭露天煤矿逆倾软岩边坡变形破坏治理方案研究  

Treating scheme of the inclined soft rock slope in the Sandaoling open-pit coal mine with its deformation and damage

作　　者：王东[1] 姜聚宇 韩新平[1] 曹兰柱[1] 宋子岭[1] WANG Dong;JIANG Ju-yu;HAN Xin-ping;CAO Lan-zhu;SONG Zi-ling(College of Mines,Liaoning Technical University,Fuxin 123000,Liaoning,China)

机构地区：[1]辽宁工程技术大学矿业学院

出　　处：《安全与环境学报》2019年第5期1587-1594,共8页Journal of Safety and Environment

基　　金：国家自然科学基金项目(51874160),国家自然科学基金重点项目(U1361211);辽宁省高等学校创新人才支持计划项目(LR2016039)

摘　　要：为解决三道岭露天矿西采区南帮逆倾软岩边坡滑坡规模大、治理困难的问题,基于已有监测数据,明确了最危险滑坡区域范围,通过滑坡变形反分析,确定了岩土体物理力学参数;基于极限平衡法及数值模拟方法,研究了不同压帮高度条件下边坡稳定性变化规律,提出了逆倾软岩边坡变形治理措施;根据压帮后监测数据,对南帮边坡治理效果进行了评价。结果表明:极限平衡法与数值模拟法研究结果具有很好的一致性,边坡稳定性均随内排压帮高度增加而增大;当内排压帮高度为28 m时,边坡稳定系数达到1. 11,满足安全储备系数要求;实施内排压帮后,各地表监测点基本处于等速变形阶段,边坡治理方案效果显著。The current paper is to dedicate itself to the landslide treatment of the anti-dip soft rock due to the large scale of the landslide with the difficulty concerned uneasy to deal with. To overcome the said difficulty,we have made an exploration of the varying regularity patterns of the displacement velocity at each monitoring point and thus confirmed the scale of the most dangerous landslide area in the west mining site of the open-pit mine based on the currently disclosed monitoring data. And,then,we have also analyzed and determined the physical and mechanical parameters of the rock and soil mass in correspondence with the landslide deformation actuality in combination with the originally gained results from the laboratory experiment-testing results. In addition,we have also made an exploration of the variety of regular patterns in the slope stability under the different conditions of the inner dump heights so as to search for likely available measures to control the slope deformation of the reversed-dip soft rock by joining the 2-D rigid limit equilibrium method and the 3-D numerical simulation. At the same time,we have also checked the effect of the slope treatment on the southern slope with the newly gained monitoring information and data. Thus,the results of the aforementioned investigation and evaluation results indicate that the slope stability tends to increase with the grow of the height of the inner dump. On the other hand,the research result of the rigid substance limit equilibrium has been found weak in accord with those gained by using the numerical simulation methods. For instance,when the height of the inner dump is 28 m,the slope stability coefficient would be coming up to 1. 11,which happens to meet the demands of the safety reserve factor. Thus,the newly added monitoring points on the surface can basically be remaining at the stage of isokinetic deformation in case the coal mine has to put its inner dump into effect. This is to say,the effect of the slope treating scheme can be regarded as being

关 键 词：安全工程 露天煤矿 逆倾软岩边坡 极限平衡法 数值模拟 治理方案 

分 类 号：X936[环境科学与工程—安全科学]