| 邓肯-张模型参数对尾矿坝变形计算的影响 |
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| 引用本文： | 刘寒鹏,王东元,马志军. 邓肯-张模型参数对尾矿坝变形计算的影响[J]. 金属矿山, 2012, 41(12): 115-118 |
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| 作者姓名： | 刘寒鹏 王东元 马志军 |
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| 作者单位： | 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 |
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| 基金项目： | 天津软土特性与工程环境重点实验室开放基金项目 |
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| 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K、n、K b 、m进行了尾矿库变形特性影响的敏感性分析，分析结果表明K、n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。
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| 关 键 词： | 尾矿砂成 邓肯-张模型 有限元 敏感性分析 |
Analysis on Tailings Dam Deformation Influenced by the Parameters of Duncan-Chang Model |
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| Liu Hanpeng , Wang Dongyuan , Ma Zhijun. Analysis on Tailings Dam Deformation Influenced by the Parameters of Duncan-Chang Model[J]. Metal Mine, 2012, 41(12): 115-118 |
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| Authors: | Liu Hanpeng Wang Dongyuan Ma Zhijun |
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| Affiliation: | 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; |
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| 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 K，n, Kb, m on the tailings deformation respectively. The analysis results show that the K，n 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. |
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| Keywords: | Tailing sands Duncan-Chang model Finite-element method Sensitivity analysis |
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