| 矸石山稳定性非线性破坏准则数值模拟分析 |
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| 引用本文： | 董倩,朱正伟,刘东燕.矸石山稳定性非线性破坏准则数值模拟分析[J].重庆大学学报(自然科学版),2009,32(2):212-217. |
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| 作者姓名： | 董倩 朱正伟 刘东燕 |
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| 作者单位： | 董倩,DONG Qian(重庆科技学院,建筑工程学院,重庆,400042;重庆大学,土木工程学院,重庆,400030);朱正伟,刘东燕,ZHU Zheng-wei,LIU Dong-yan(重庆大学,土木工程学院,重庆,400030)
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| 基金项目： | 重庆市自然科学基金，重庆国土资源和房屋管理局科研计划 |
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| 摘 要： | 在探讨矸石山主要特征的基础上,基于Hoek-Brown非线性强度准则进行FLAC(fastlagrangian analysis of continua)数值模拟,分析矸石山稳定性随堆积高度的增加动态的变化过程.结果表明:随堆积高度增加,矸石山位移、变形程度增大,潜在滑移面逐渐形成,失稳破坏趋势渐增,且矸石山散粒层高度、面积增加,坡面出现局部滑塌几率增大;依据非线性强度准则计算得到的安全系数随矸石山高度增加而减小,符合矸石山堆积越高越不安全的实际情况.计算结果和理论分析表明采用文中方法分析矸石山稳定性具有合理性.
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| 关 键 词： | 堆积散体 矸石山稳定性 自组织临界性 抗剪强度非线性 FLAC数值模拟 |
Stability of various height waste dumps based on nonlinear strength criterion |
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| DONG Qian,ZHU Zheng-wei,LIU Dong-yan.Stability of various height waste dumps based on nonlinear strength criterion[J].Journal of Chongqing University(Natural Science Edition),2009,32(2):212-217. |
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| Authors: | DONG Qian ZHU Zheng-wei LIU Dong-yan |
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| Institution: | 1.Department of Civil Engineering and Architecture;Chongqing University of Science and Technology;Chongqing 400042;P.R.China;2.Department of Civil Engineering;Chongqing University;Chongqing 400030;P.R.China |
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| Abstract: | Coal mining waste dumps are representative artificial accumulations of bulky rock and soil material.Certain factors make these dumps possess characteristics such as self-organized criticality,nonlinear shear strength of the waste accumulation.We discusse the main waste dump characteristics and subsequently produced numerical simulations of the stability of waste dumps of various heights using the Fast Lagrangian Analysis of Continua and based on the Hoek-Brown nonlinear strength criterion.The simulation cal... |
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| Keywords: | bulky rock and soil material waste dump stability self-organized criticality nonlinear shear strength Fast Lagrangian Analysis of Continua |
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