论文部分内容阅读
介绍了在工作面回采的同时回收部分护巷煤柱的方法,该方法简单易行,安全可靠,既可提高煤炭回收率又可降低吨煤成本。
This paper introduces a method of recovering coal pillar of partial retaining roadway while working face recovery. The method is simple, safe and reliable, which can not only improve coal recovery but also reduce the cost of coal per tonne.