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现代矿业 ›› 2022, Vol. 38 ›› Issue (12): 149-.

• 岩土工程 • 上一篇    下一篇

基于结构面精细调查的露天边坡台阶破坏分析

吴和平1,2 邹平3 吴才伍4   

  1. 1. 中国有色金属实业技术开发有限公司;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
  • 出版日期:2022-12-25 发布日期:2023-05-16

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

WU Heping1,2 ZOU Ping3 WU Caiwu4   

  1. 1. China Nonferrous Metal Industry Technology Development Co.,Ltd.; 2. Xinda Gold and Silver Develop⁃ ment Center Co.,Ltd.; 3. Zijin (Changsha) Engineering Technology Co.,Ltd.; 4. Hunan Vocational Insti⁃ tute of Safety Technology
  • Online:2022-12-25 Published:2023-05-16

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。

关键词: 露天矿边坡, 台阶破坏, 结构面, 赤平投影

Abstract: 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 re⁃ sults,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 quartz⁃ ite,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.

Key words: open-pit slope, step destruction, structural plane, stereographic projection