基于结构面精细调查的露天边坡台阶破坏分析  

Bench Failure Analysis of Open-pit Slope Based on Fine Investigation of Structural Plane

作　　者：吴和平 邹平[3] 吴才伍 WU Heping;ZOU Ping;WU Caiwu(China Nonferrous Metal Industry Technology Development Co.,Ltd.;Xinda Gold and Silver Develop-ment Center Co.,Ltd.;Zijin(Changsha)Engineering Technology Co.,Ltd.;Hunan Vocational Institute of Safety Technology)

机构地区：[1]中国有色金属实业技术开发有限公司,北京市海淀区100038 [2]鑫达金银开发中心有限责任公司 [3]紫金(长沙)工程技术有限公司 [4]湖南安全技术职业学院

出　　处：《现代矿业》2022年第12期149-152,共4页Modern Mining

摘　　要：露天矿边坡多以岩质边坡为主,其常见的破坏形式表现为边坡台阶的平面破坏或者楔体破坏。以内蒙古某金矿为研究对象,以岩体结构面的现场精细调查为基础,从定性和定量的角度研究了该露天矿边坡台阶的稳定性情况和破坏模式。根据研究结果,推荐各岩性边坡台阶参数:绿泥石英片岩的台阶坡面角为51°~53°,不应并段,台阶高度9 m;石英岩、流纹斑岩、绢云母石英片岩的台阶坡面角为65°~70°,可以并段,台阶高度9 m,并段后台阶高度18 m。The slope of open-pit mine is mainly rock slope,and its common failure form is the plane failure or wedge failure of slope steps.Taking a gold mine in Inner Mongolia as the research object,based on the on-site fine investigation of the rock mass structural plane,the stability and failure mode of the slope steps of the open-pit mine are studied qualitatively and quantitatively.According to the research results,the step parameters of each lithologic slope are recommended:the step slope angle of chlorite quartz schist is 51°~53°,which should not be merged,and the step height is 9 m.The step slope angle of quartzite,rhyolite porphyry and sericite quartz schist is 65°~70°,and can be merged,the step height is 9 m,and the back step height is 18 m.

关 键 词：露天矿边坡 台阶破坏 结构面 赤平投影 

分 类 号：TD854.6[矿业工程—金属矿开采]