欢迎访问《金属矿山》杂志官方网站,今天是 分享到:
×

扫码分享

金属矿山 ›› 2012, Vol. 41 ›› Issue (12): 115-118.

• 安全与环保 • 上一篇    下一篇

邓肯-张模型参数对尾矿坝变形计算的影响

刘寒鹏1,2,王东元1,2,马志军3   

  1. 1.天津城市建设学院地质系;2.天津软土特性与工程环境重点实验室;3.河北地矿局第四地质大队
  • 出版日期:2012-12-15 发布日期:2012-12-28
  • 基金资助:

    * 天津软土特性与工程环境重点实验室开放基金项目(编号:2011SCEEKL007)。

Analysis on Tailings Dam Deformation Influenced by the Parameters of Duncan-Chang Model

Liu Hanpeng1,2,Wang Dongyuan1,2,Ma Zhijun3   

  1. 1.Department of Geology,Tianjin Institute of Urban Construction;2.Tianjin Key Laboratory of Soft Soil Characteristic and Engineering Environment;3.Fourth Geological Team of Geological and Mineral Bureau in Hebei
  • Online:2012-12-15 Published:2012-12-28

摘要: 通过土工试验得到承德某铁矿尾矿库尾矿砂邓肯-张(E-B)本构模型参数,采用Midas GTS有限元分析软件建立该尾矿库数值计算模型,分别对E-B模型中参数KnK bm进行了尾矿库变形特性影响的敏感性分析,分析结果表明Kn取值对尾矿库的变形计算结果精度影响较大,其中参数K对尾矿库垂直向位移影响最大,n对水平位移影响最大,因此以上2参数合理取值对于尾矿库变形计算极其重要。

关键词: 尾矿砂成 邓肯-张模型, 有限元, 敏感性分析

Abstract: The parameters of Duncan-Chang (E-B) constitutive model for the tailings dam of an Iron Mine in Chengde are obtained through soil tests. Midas GTS finite element analysis software is adopted to establish the numerical calculation model for tailings dam and to make the sensitivity analysis of E-B model parameters Kn, Kb, m on the tailings deformation respectively. The analysis results show that the Kn values greatly affect of the calculation accuracy of the tailings dam deformation. Among these values,K affects the vertical displacement of the tailings pond to be utmost,and n impacts on the horizontal displacement to be utmost. 2 reasonable parameters values are extremely important for the tailings dam deformation.

Key words: Tailing sands, Duncan-Chang model, Finite-element method, Sensitivity analysis