| 排土场稳定性影响因素显著性研究 |
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| 引用本文： | 张萌,刘宏磊,乔文光,高勋.排土场稳定性影响因素显著性研究[J].中国安全科学学报,2021(2):69-75. |
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| 作者姓名： | 张萌 刘宏磊 乔文光 高勋 |
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| 作者单位： | 矿冶科技集团有限公司环境工程研究设计所;中国矿业大学（北京）国家煤矿水害防治工程技术研究中心;内蒙古自治区地质环境监测院矿山室 |
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| 基金项目： | 国家自然科学基金资助(41702261)。 |
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| 摘 要： | 为提升排土场稳定性,以某露天煤矿排土场为例,结合正交试验和强度折减法,开展排土场稳定性影响因素显著性研究。通过分析资料与野外调研,厘定典型排土场稳定性诱发因素,构建排土场真三维地质模型,反演验证和分析排土场的岩土体参数和变形规律特征,得出排土场边坡内部应力和位移的变化特征以及塑性破坏区分布范围;以真三维网格模型中最危险截面为依据构建理想模型,设计正交试验模拟方案并开展数值模拟,对模拟结果进行方差分析,寻求显著影响因素。研究结果表明:台阶数量、台阶高度、气象水文和台阶角度等对排土场稳定性的影响为极显著;台阶宽度对排土场稳定性的影响为显著。
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| 关 键 词： | 排土场 稳定性影响因素 正交试验 数值模拟 方差分析 |
Significant research on influencing factors of dump stability |
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| ZHANG Meng,LIU Honglei,QIAO Wenguang,GAO Xun.Significant research on influencing factors of dump stability[J].China Safety Science Journal,2021(2):69-75. |
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| Authors: | ZHANG Meng LIU Honglei QIAO Wenguang GAO Xun |
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| Institution: | (Environmental Engineering Research and Design Institute,BGRIMM Technology Group Co.Ltd.,Beijing 100160,China;National Engineering Research Center on Mine Water Prevention and Resource,China University of Mining&Technology(Beijing)Beijing 100083,China;Department of Mine,Institute of Geological Environmental Monitoring of Inner Mongolia,Hohhot Inner Mongolia 010010,China) |
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| Abstract: | In order to improve stability of waste dump,takes an open-pit coal mine dump as an example,significant of influencing factors of dump stability based on orthogonal test and strength reduction method were studied.Induced factors of typical dump stability were determined through analysis of collected data and field survey,a true 3D geological model of dump was constructed,inversion verifies and analyzes geotechnical parameters and deformation characteristics of dump,and variation characteristics of stress and displacement inside slope and distribution range of plastic failure zone were obtained.Based on the most dangerous section in real 3D mesh model,an ideal model was built,orthogonal experimental simulation scheme was designed and numerical simulation was carried out,and variance analysis of simulation results was carried out to seek for significant influencing factors.The results show that the number of steps,height of steps,meteorology,hydrology and step angle have a significant influence on the stability of dump.Influence of step width on the stability of dump is significant. |
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| Keywords: | waste dump influencing factors of stability orthogonal test numerical simulation variance analysis |
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