露井联采边帮隔离煤柱宽度确定

Determination of Width of Isolated Coal Pillar for Side Wall Combined Mining

边帮隔离煤柱宽度直接影响着井工回采工作面的安全和煤层的回收率,所以确定边帮隔离煤柱宽度尤为重要。根据矿山地质资料与开采现状,运用FLAC^(3D)软件建立矿山边坡模型。通过模拟边帮下部煤层的开采情况,分析不同宽度边帮隔离煤柱的垂直应力分布规律,并结合数值计算确定出合理的边帮隔离煤柱宽度,从而指导露井联采的进行。

The width of isolated coal pillar directly influences safety of the stope face and the recovery rate of coal seam,so it is important to determine the width of the isolated coal pillar. Based on geological data and mining status,and established a mine slope model by FLAC3D software. Through simulate circumstance of slope under coal mining, analyzed different width for isolated coal pillar vertical stress distribution and numerical calculation determine the slope isolation width of coal pillar,so as to guide the conduct of open underground mining.