论文部分内容阅读
通过对 4 0 4 1工作面顶板压力观测及老顶岩梁运动的分析 ,对在极近距离煤层刀柱采空区下进行长壁回采的工作面支承压力显现和顶板活动规律进行了探讨 ,总结了刀柱采空区下长壁工作面的开采经验。
Through the analysis of roof pressure observation and old roof beam movement of 4 0 4 1 working face, bearing pressure and roof movement of longwall face mining under ultra-short distance coal pillar pillars are discussed. Summarized the mining experience of the lower wall face under the pillar gob area.