浅析工作面两端底煤回采及两巷支护技术

On both ends of the bottom face of coal mining and the two roadway support technology

为了提高矿井煤炭回收率,对鹤煤八矿3101工作面沿底推进过程中造成的上下端头留设三角煤的回采技术进行了探索性的改进和实践应用,通过绞架、落底等方式对工作面上下端头留设三角煤厚度和长度最大程度的控制,同比情况下大大增加了原煤产量,实现了安全、高效的发展战略。

To improve the recovery of coal mines, eight coal mine on the Gape along the bottom face 3101 caused the advance of the upper and lower ends leaving in foal mining technology triangle to explnre the praetical application of improvement and, through the gallows, and sole methods on the bottom surface of the work of keeping it set up coal thiekness and length of the triangle maximum De control of the situation naxt year significantly increased the output of raw coal, to achieve a safe and efficient Fazhan strategy.