韩城矿区下组煤开采底板扰动破坏规律研究  

Study on floor disturbance and failure of lower group coal mining in Hancheng mining area

作　　者：卫兆祥[1] 郭小铭 

机构地区：[1]陕西陕煤韩城矿业有限公司,陕西韩城715400 [2]中煤科工集团西安研究院有限公司,陕西西安710054

出　　处：《煤炭工程》2016年第2期75-78,共4页Coal Engineering

基　　金：国家自然科学基金课题"深部煤层开采矿井突水机理与防治基础研究"(51034003)

摘　　要：针对当前底板破坏深度经验公式在渭北韩城矿区适用性较差的问题,为了合理确定煤层底板扰动破坏深度,科学制定防治水方案,以桑树坪矿3105工作面为研究对象,依据实测底板破坏深度成果,分析确定底板破坏深度影响因素,利用基于有限差分FLAC3D数值模拟,结合多因素非线性回归理论及数据挖掘技术,建立了煤层底板破坏深度与采宽、采深、采厚等因素的多因素回归模型,从而掌握矿区下组煤底板扰动破坏规律。通过实测成果验证并与相关经验公式进行对比,结果表明模型具有较高的准确性,能准确预测韩城矿区煤层底板扰动破坏深度,同时对整个渭北煤田下组煤安全回采具有重要意义。As the empirical equation is not suitable for depth of floor failure in Hancheng mining area,to determine the depth of floor failure,and provide reasonable water control measures,the law of floor failure depth is studied. Taking coal mining face No. 3105 of Sangshuping mine as research object,based on the measured value of floor failure depth,main factors are determined. Numerical model is built with FLAC3 D,combining with linear regression to build a regression model with multi- factors considered. Through comparing the measured value of floor failure depth and empirical equation,accuracy of the regression model is verified. It can predict the depth of floor failure in Hancheng mining area,offering great significance for sublevel coal mining in Weibei coalfield.

关 键 词：底板破坏 韩城矿区 回归分析 数值模拟 经验公式 底板导水破坏带 

分 类 号：TD823.83[矿业工程—煤矿开采]