先锋露天矿北帮边坡稳定性控制方案优化  

Optimization on stability control scheme for north slope of Xianfeng Open-pit Mine

作　　者：王胆 吴晨 吕泊宁 蒋香莲 林令鑫 WANG Dan;WU Chen;LYU Boning;JIANG Xianglian;LIN Lingxin(Yunnan Xianfen Coal Industry Development Co.,Ltd.,Kunming 655211,China;North China University of Technology,Beijing 100144,China)

机构地区：[1]云南先锋煤业开发有限公司,云南昆明655211 [2]北方工业大学,北京100144

出　　处：《露天采矿技术》2025年第1期88-91,共4页Opencast Mining Technology

摘　　要：为了研究露天矿边坡变形失稳问题,以先锋露天矿北帮边坡为工程背景,采用Midas GTS NX和GeoStudio-Slope数值模拟软件,基于强度折减理论和摩尔-库伦强度准则,研究了边坡破坏模式和发展趋势;提出了“削坡减载”和“削坡减载+压脚”2种边坡稳定性控制方案,并对比分析了2种方案下边坡的安全系数。结果表明:先锋北帮边坡变形破坏模式为“顺层剪切”破坏;单一采用“削坡减载”方案对边坡稳定性控制具有局限性,应采取“削坡减载+压脚”方案。In order to study the deformation and instability of open-pit mine slopes,taking the north slope of Xianfeng Open-pit Mine as the engineering background,Midas GTS NX and GeoStudio Slope numerical simulation software are used.Based on the strength reduction theory and Mohr Coulomb strength criterion,the failure mode and development trend of slopes are studied.Two slope stability control schemes,"slope reduction load"and"slope reduction load+foot pressure",are proposed,and the safety factors of slopes under the two schemes are compared and analyzed,The results show that the deformation and failure mode of Xianfeng north slope is"bedding shear"failure;the use of the"slope cutting and load reduction"scheme alone has limitations in controlling slope stability.The"slope cutting and load reduction+foot pressing"scheme should be adopted.

关 键 词：边坡稳定性 削坡减载 压脚 顺层剪切 数值模拟 

分 类 号：TD824.7[矿业工程—煤矿开采]