平朔东露天矿排土场边坡破坏模式与稳定性研究  

Failure mode and stability of dump slope in Pingshuo East Open-pit Mine

作　　者：张岩 蔡峰[1] 李海涛 ZHANG Yan;CAI Feng;LI Hai-tao(China National Coal Group Corporation,Beijing 100120,China;Mine Safety Technology Branch of China Coal Research Institute,Beijing 100013,China)

机构地区：[1]中国中煤能源集团有限公司,北京100120 [2]煤炭科学技术研究院有限公司安全分院,北京100013

出　　处：《煤炭工程》2020年第9期130-134,共5页Coal Engineering

基　　金：国家重点研发项目(2017YFC0804206);国家科技重大专项资助项目(2016ZX05067005-001);中央高校基本科研业务费资助项目(3142019005)。

摘　　要：通过对平朔东露天矿南洼村排土场实际工程地质及水文地质条件进行研究,建立了东露天矿排土场边坡稳定研究工程地质模型,采用PFC数值分析软件模拟研究了排土场边坡失稳过程中的应力、位移、塑性区分布特征,探明了边坡变形破坏模式及失稳机理,运用Slide极限平衡分析软件对南洼村排土场现状边坡稳定性进行评价,结合现场实际条件提出了边坡变形破坏的防治措施,为保证边坡安全、实现高效生产提供了理论依据。By studying the actual engineering geology and hydrogeological conditions of the Nanwa Village dump in Pingshuo East Open-pit Mine,an engineering geological model for the dump slope stability is established,and PFC numerical analysis software is used to study the distribution characteristics of stress,displacement,and plastic zone in the process of slope failure.Also,the failure mode and failure mechanism of the slope are explored,and the slope stability of the Nanwa Village dump site is evaluated using the Slide limit equilibrium analysis software.Combining the actual conditions of the site,the prevention and treatment measures for slope deformation and damage are proposed,which can provide theoretical basis to ensure the slope safety and realize efficient production.

关 键 词：露天煤矿 排土场 边坡稳定性 边坡变形破坏 

分 类 号：TD824.7[矿业工程—煤矿开采]