摘要
回采巷道围岩破坏严重制约着大采高工作面的安全生产,以中能煤业2302工作面风、运巷为背景,通过研究大采高工作面回采巷道的围岩松动圈的范围、锚杆锚固力和勘察现场支护效果,得到巷道的节理层理发育主导的危险区域、高应力主导的危险区域、地质构造主导的危险区域及现场勘察的危险区域的位置,综合分析评价巷道的危险区域。
The damage of the surrounding rock seriously restricted the safe production of large mining height working face.Based on the wind and transportation roadway of 2302 working face,danger area of dominant layer development,high stress,geologic structure,field investigation were got by studying the range of loosing circle of surrounding rock,anchor-holding force of anchor bolt and site support effect.
出处
《煤炭与化工》
CAS
2017年第10期41-45,共5页
Coal and Chemical Industry
关键词
大采高工作面
回采巷道
危险区域
large mining height working face
recovery roadway
danger are