摘要
以鲍店煤矿六采区3#煤6204工作面为工程背景,采用理论分析和数值模拟的方法对下部采场的应力分布规律进行了研究,得出随着工作面不断接近煤柱边缘超前支承压力峰值会逐渐增加。工作面处于煤柱下时超前支承压力远远大于采空区下的支承压力,因此在有上层煤柱存在的情况下开采时要做好防冲预警和相应的预防措施,以防止冲击地压的发生。
Taking six mining area No. 3 coal seam 6204 working face as engineering background, the paper researched the stress distri- bution laws of the lower part of the stope by using the theoretical analysis and numerical simulation, obtained that the lead abutment pressure peak would gradually increase with the face constantly close to the edge of the coal pillar. The lead bearing pressure of coal pillar under working face was far greater than abutment pressure under gob area. Therefore, when mining is in the case of the upper coal pillar, the impingement warning and corresponding prevention measures should be done to prevent the occurrence of roekburst.
出处
《煤矿安全》
CAS
北大核心
2013年第9期77-80,共4页
Safety in Coal Mines
基金
国家自然科学基金资助项目(51144006)
关键词
上部采空区
边界煤柱
下部采场
应力集中
数值模拟
upper gob area
boundary pillar
lower stope
stress concentration
numerical simulation
