摘要
为解决红柳林煤矿5#煤层护巷煤柱合理宽度留设问题,以该矿25202工作面为工程背景,通过弹塑性极限平衡理论分析得出煤柱留设理论宽度为14.8 m,并对不同煤柱宽度支承压力分布特征进行了模拟研究,确定了护巷煤柱合理留设宽度在15 m时可保持煤柱巷道的稳定性,其结果与现场实测数据相吻合。
In order to solve reasonable coal pillar width setting problem in Hongliulin 5# coal seam, taking 25202 working face as engi- neering background, coal pillar setting width is 14.8 m through plastic limit equilibrium theory; and abutment pressure distribution fea- tures of different coal pillar widths were simulated to ensure the stability of roadway when reasonable coal pillar setting width was 15 m, and the results were consistent with field data.
出处
《煤矿安全》
CAS
北大核心
2014年第1期47-50,共4页
Safety in Coal Mines
关键词
护巷煤柱
大采高大跨度工作面
合理留设
支承压力
现场实测
chain pillar
large mining height and large span mining face
rational setting
abutment pressure
field measurement