露天矿冰碛土堆积体巨型古滑坡稳定性分析  

Stability Analysis of Giant Ancient Landslide of Moraine Soil Accumulation in an Open-pit Mine

作　　者：吕淑宁 张默 LYU Shuning;ZHANG Mo(Xichang Mining Co.,Ltd.of Chongqing Iron And Steel Co.,Ltd.;Sinosteel Maanshan General Institute of Mining Research Co.,Ltd.;State Key Laboratory of Safety and Health for Metal Mines;Key Laboratory of Disaster Prevention and Control for Non-coal Open-pit Mines;Huawei National Engineering Research Center for Efficient Recycling of Metallic Mineral Resources Co.,Ltd.)

机构地区：[1]重钢西昌矿业有限公司 [2]中钢集团马鞍山矿山研究总院股份有限公司 [3]金属矿山安全与健康国家重点实验室 [4]非煤露天矿山灾害防控国家矿山安全监察局重点实验室 [5]华唯金属矿产资源高效循环利用国家工程研究中心有限公司

出　　处：《现代矿业》2023年第12期108-111,共4页Modern Mining

摘　　要：针对某露天矿采场揭露的冰碛土堆积体古滑坡的稳定性问题,详细分析了冰碛土古滑坡的工程特征、地质特征、变形特征和滑坡成因机制;计算了古滑坡的稳定性,根据稳定状态和剩余下滑力,对比分析了削坡减载和抗滑桩加固2种治理方案。判定古滑坡处于蠕动-滑移变形阶段,因滑坡剩余下滑力很大,通过削坡减载的治理方案更为恰当。Aiming at the stability problem of moraine soil accumulation ancient landslide exposed in an open-pit mine,the engineering characteristics,geological characteristics,deformation characteristics and landslide formation mechanism of moraine soil ancient landslide are analyzed in detail.The stability of the ancient landslide is calculated.Finally,according to the stable state and the residual sliding force,two treatment schemes of slope cutting and load reduction and anti-slide pile reinforcement are compared and analyzed.It is determined that the ancient landslide is in the creep-slip deformation stage.Due to the large residual sliding force of the landslide,the treatment scheme of slope cutting and load reduction is more appropriate.

关 键 词：冰碛土 古滑坡 边坡稳定性 剩余下滑力 削坡减载 

分 类 号：TD32[矿业工程—矿井建设] TD804