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金属矿山 ›› 2010, Vol. 39 ›› Issue (10): 31-33,175.

• 采矿工程 • 上一篇    下一篇

露天采场高陡岩质边坡流固耦合稳定性研究

张强1,2,巢梨花3   

  1. 1.中钢集团马鞍山矿山研究院有限公司;2.金属矿山安全与健康国家重点实验室;3.安徽工业大学
  • 出版日期:2010-10-15 发布日期:2010-11-09
  • 通讯作者: 张强,243004 安徽省马鞍山市湖北路9号。
  • 作者简介:张强(1977—),男,中钢集团马鞍山矿山研究院有限公司岩土工程研究所,金属矿山安全与健康国家重点实验室,工程师。

Stability Research of the Fluid-solid Coupling of High and Steep Rock Slope

Zhang Qiang1,2,Chao Lihua3   

  1. 1.Sinosteel Maanshan Institute of Mining Research Co.,Ltd.;2.State Key Laboratory of Safety and Health for Metal Mine;3.Anhui University of Technology
  • Online:2010-10-15 Published:2010-11-09

摘要: 运用有限单元法,建立了平川铁矿露天采场高陡岩质边坡仿真模型。在分析了露天采场地下水渗流机理的基础上,建立了渗流场和应力场的两者耦合模型,对露天采场高陡岩质边坡进行了有限元二维渗流场-应力场耦合稳定性计算。采用强度折减法,对整个露天采场区域典型边坡剖面进行了稳定性分析,并给出了安全稳定系数。对有限单元法计算结果与极限平衡法计算结果进行了比较,两者计算出的边坡稳定性系数较为吻合,边坡破坏的剪出口是一致的,破坏曲线也较吻合。

关键词: 高陡岩质边坡, 有限元强度折减法, 渗流场-应力场耦合, 极限平衡法, 安全系数比较

Abstract: The finite element method is adopted to build a simulation model of high and steep rock slope of open pit in Pingchuan Iron Ore.Based on the seepage mechanism analysis of groundwater at open pit,the coupling model of both seepage field and stress field is established,and the coupling stability of finite element two-dimensional slope seepage-stress field for high and steep rock slope at open pit is calculated,with the safety coefficients given.With the comparison of the results by the finite element method and the limit equilibrium method,it is found out that their safety coefficients are consistent,and the shear cracks caused by slope landslide are similar,and their destruction curves are coherent also.

Key words: High and steep rock slope, Strength reduction of finite element, Coupling of seepage field-stress field, Limit equilibrium method, Comparison of safety coefficients