新柳煤矿下位煤层巷道合理位置布置分析  

Rational Position Layout Analysis for Roadway in Underlying Coal Seam of Xinliu Coal Mine

作　　者：孟浩[1] 陈宝宝[1] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083

出　　处：《煤矿安全》2015年第5期167-171,共5页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51104162);国家自然科学基金煤炭联合基金资助项目(U1361209);国家重点基础研究发展计划(973计划)资助项目(2013CB227903)

摘　　要：针对新柳煤矿近距离煤层群开采的下位煤层巷道布置难题,综合采用理论分析,数值模拟及现场实测的方法,对新柳煤矿9#煤层不同煤柱宽度下,10^#及11^#煤层合采时巷道布置位置进行研究。结果表明：当煤柱宽度小于7 m时,煤柱整体进入塑性状态;煤柱下方岩层的垂直应力集中程度明显降低,下位煤层巷道布置可不考虑上位煤层煤柱影响,可采用外错式、内错式和重叠式布置形式。煤柱宽度处于7-10 m时,煤柱虽不能形成稳定煤柱,但整体未进入塑性状态,下位煤层巷道可采用内错式或重叠式布置方式。当煤柱宽度大于10 m时,煤柱能够形成稳定煤柱,其传递的集中载荷在底板形成较大范围的应力增高区,巷道布置宜采用内错式布置形式,内错距离为7 m左右。In order to solve the problem of rational position for underlying coal seam in Xiuliu Coal Mine, this study takes theoretical analysis, numerical analysis and field measurement to research the rational position of roadway layout for 10^# and 11^# coal seams. The conclusions show that the coal pillar will be in plastic area while the width of coal pillar is less than 7 m, and the roadway layout of underlying coal seam could not consider the influence of upper coal seam, which means the internal alternate style, external alternate style and eclipsed style could also be used. While the coal pillar width is 7 m to 10 m, although the coal pillar is not in plastic area entirely, external alternate style and eclipsed style is still in effect. While the width of coal pillar is up to 10 m, the stability of coal pillars will be formed and a wide range of increased - stress area will be appeared, the internal alternate style of roadway layout must be used and the internal alternate distance should be 7 m.

关 键 词：多煤层开采 煤柱宽度 塑性区 应力分布 巷道位置 

分 类 号：TD263[矿业工程—矿井建设]