黄土沟壑地貌下原岩应力场分布特征研究
投稿时间:2020-05-20  修订日期:2020-05-30  点此下载全文
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作者单位E-mail
杨秀宇 中煤华晋集团有限责任公司王家岭煤矿 231171859@qq.com 
巨文涛 中煤华晋集团有限责任公司王家岭煤矿  
张光磊 中煤能源研究院有限责任公司  
王仲伦 太原理工大学原位改性采矿教育部重点实验室 1040909381@qq.com 
中文摘要:基于王家岭矿12309工作面黄土沟壑地貌的工程实际,运用实地调研的方法归纳总结了工作面地表黄土沟壑地表类型,构建了地表三维形态数据库;结合Midas-GTS等辅助软件,建立了含有黄土沟壑地貌的12309工作面三维全尺寸等比例的FLAC3D数值计算模型;运用数值计算的方法,对黄土沟壑地貌下原岩应力分布规律进行了分析;提出了黄土沟壑地貌影响系数,结合数值计算结果拟合出了η的非线性表达式;划分了工作面回采时地表黄土沟壑影响区域,对12309工作面安全高效回采提供了理论基础。
中文关键词:黄土沟壑地貌  数值模拟  影响系数  影响区划
 
Study on the distribution characteristics of the in-situ rock stress fieldunder the Loess Gully landform
Abstract:Based on the engineering practice of loess gully landform in 12309 working face of Wangjialing mine, the surface types of Loess Gully in working face are summed up by using the method of field investigation, and the surface 3D shape database is constructed; combined with Midas GTS and other auxiliary software, the FLAC3D numerical calculation model with 3D full-scale and equal proportion of 12309 working face including loess gully topography is established; the FLAC3D numerical calculation model with numerical calculation is used Methods: the distribution law of the in-situ stress under the Loess Gully landform was analyzed; the influence coefficient of the Loess Gully landform was put forward, and the non-linear expression of η was fitted with the numerical calculation results; the influence area of the surface loess gully was divided when the working face was mined, which provided the theoretical basis for the safe and efficient mining of 12309 working face.
keywords:Loess ravine geomorphologic  Numerical simulation  Influence coefficient  Influence zoning
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