基于FLAC~(3D)的尾矿库地震稳定性分析
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摘要
数值模拟已成为岩土工程稳定性分析计算的有效方法之一。应用FLAC3D建立了某铁矿尾矿库排砂现状的三维网格模型和流固耦合状态模型,选择Mohr-Coulomb模型描述尾砂的本构关系,并对该尾矿库在地震作用下的整体稳定性进行了分析。研究结果表明,该尾矿库总体稳定性良好,但在大烈度地震作用下局部有发生液化垮坝的危险;位移及速度最活跃的区域出现在尾矿库的坝底和坝顶边缘,应加强对这些区域的日常监测与管理;应用FLAC3D进行地震作用下尾矿库整体稳定分析是可行的,为分析尾矿库动力问题提供了范例。
Numerical simulation is one of the effective methods to analyze the stability of geotechnical engineer.The finite difference software FLAC3D(Fast Lagrangian Analysis of Continua in 3 Dimensions) was applied to establish a 3D-mesh model and a fluid-solid model of an iron mine tailing pond,and the constitutive relation of tailings was described by the Mohr-Coulomb model to analyze the stability of tailing dam under earthquake.The results indicate that the tailing pond has been on the whole stable under strong earthquake,except some partial liquefaction which can possibly lead to breaking.And the most active area of tailing pond is in the edge of dam base or dam crest.The results also show that it is feasible to analyze the overall stability of tailing pond under earthquake action by means of FLAC3D,which provides an access to analyze some dynamic problems of tailing pond.
Numerical simulation is one of the effective methods to analyze the stability of geotechnical engineer.The finite difference software FLAC3D(Fast Lagrangian Analysis of Continua in 3 Dimensions) was applied to establish a 3D-mesh model and a fluid-solid model of an iron mine tailing pond,and the constitutive relation of tailings was described by the Mohr-Coulomb model to analyze the stability of tailing dam under earthquake.The results indicate that the tailing pond has been on the whole stable under strong earthquake,except some partial liquefaction which can possibly lead to breaking.And the most active area of tailing pond is in the edge of dam base or dam crest.The results also show that it is feasible to analyze the overall stability of tailing pond under earthquake action by means of FLAC3D,which provides an access to analyze some dynamic problems of tailing pond.
引文
[1]李明,胡乃联,于芳,等.ANSYS软件在尾矿坝稳定性分析中的应用[J].有色金属:矿山部分,2005,57(5):45-48.
[2]祝玉学,戚国庆,鲁兆明,等.尾矿库工程分析与管理[M].北京:冶金工业出版社,1999.
[3]彭文斌.FLAC3D实用教程[M].北京:机械工业出版社,2007.
[4]中冶集团建筑研究总院,邯邢冶金矿山管理局.邯邢冶金矿山管理局西石门铁矿后井尾矿库坝体抗震稳定性研究[R].武安:邯邢冶金矿山管理局西石门铁矿,2006.
[5]曹金海,段蔚平,吴小刚.余震动对上游法尾矿坝稳定性的影响研究[J].金属矿山,2009(7):74-76.
[6]刘波,韩彦辉.FLAC原理实例与应用指南[M].北京:人民交通出版社,2005.
[7]陈育民,徐鼎平.FLAC/FLAC3D基础与工程实例[M].北京:中国水利水电出版社,2009.
[8]杨文采,杨午阳,程振炎.中国大陆科学钻探孔区的地震波速模型[J].地球物理学报,2006,49(2):477-489.
[9]陈厚群.坝址地震动输入机制探讨[J].水力学报,2006,37(12):1417-1423.
[2]祝玉学,戚国庆,鲁兆明,等.尾矿库工程分析与管理[M].北京:冶金工业出版社,1999.
[3]彭文斌.FLAC3D实用教程[M].北京:机械工业出版社,2007.
[4]中冶集团建筑研究总院,邯邢冶金矿山管理局.邯邢冶金矿山管理局西石门铁矿后井尾矿库坝体抗震稳定性研究[R].武安:邯邢冶金矿山管理局西石门铁矿,2006.
[5]曹金海,段蔚平,吴小刚.余震动对上游法尾矿坝稳定性的影响研究[J].金属矿山,2009(7):74-76.
[6]刘波,韩彦辉.FLAC原理实例与应用指南[M].北京:人民交通出版社,2005.
[7]陈育民,徐鼎平.FLAC/FLAC3D基础与工程实例[M].北京:中国水利水电出版社,2009.
[8]杨文采,杨午阳,程振炎.中国大陆科学钻探孔区的地震波速模型[J].地球物理学报,2006,49(2):477-489.
[9]陈厚群.坝址地震动输入机制探讨[J].水力学报,2006,37(12):1417-1423.
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