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现代矿业 ›› 2013, Vol. 29 ›› Issue (07): 7-10.

• 采选工程 • 上一篇    下一篇

曼家寨露天采场西帮边坡原位直剪试验研究

李诚1,项宏海2,3,段蔚平2,3   

  1. 1.云南华联锌铟股份有限公司;2.中钢集团马鞍山矿山研究院有限公司;3.金属矿山安全与健康国家重点实验室
  • 出版日期:2013-07-15 发布日期:2013-08-22

In-situ Direct Shear Test Study of West Slope of Manjiazhai Open-pit

Li Cheng1,Xiang Honghai2,3,Duan Weiping2,3   

  1. 1.Yunnan Hualian Zinc & Indium Co., Ltd.;2.Sinosteel Maanshan Institute of Mining Research Co.,Ltd.;3.State Key Laboratory of Safety and Health for Metal Mine
  • Online:2013-07-15 Published:2013-08-22

摘要: 针对曼家寨露天采场工程地质现状,在西帮边坡通过现场调查确定出有代表性的岩土层,采用人工挖坑,用土石袋堆载方法进行了现场原位直剪试验。对试验数据整理分析,获得了τ-ε曲线图,用最小二乘法回归得出抗剪强度σ-τ关系曲线图和相应的抗剪强度参数cΦ值及相关系数r。试验表明,西帮边坡原位直剪试验研究对露天采场边坡稳定性评价及工程治理优化具有重要价值。

关键词: 边坡, 原位直剪试验, 抗剪强度, 变形

Abstract: According to geological situation of the Manjiazhai open-pit project, more representative rock-soil layer at west slope confirmed through field investigation, in-situ direct shear test was done by using artificial digging and soil-stone bags load method. Through analysis of experimental data, τ~ε curve obtained, shear strength σ~τ relationship curve and corresponding shear strength parameters cΦ value and correlation coefficient r were obtained by using least squares regression. The test indicates that in-situ direct shear test of west slope has the important value to slope stability evaluation of open pit and engineering optimization.

Key words: Slope, In-situ direct shear test, Shear strength, Deformation