摘要
兖矿贵州能化有限公司青龙煤矿可采煤层较多,煤层瓦斯含量较大,巷道掘进过程中的瓦斯经常超限,经过探索和研究,通过采用两帮钻场提前预抽等方法,解决了掘进巷道瓦斯超限的问题,加快了巷道的施工速度。
Qinglong coal mine has a number of workable coal seams containing high content of gas. Gas emission in the roadway drivage always exceeds the safety limit. As a result of repeated experiments and research, pre-drainage was adopted by drilling boreholes from drilling sites on both sides of the roadway. The problem with excessive gas emission in the roadway drivage was solved, which accelerated the speed of roadway drivage.
出处
《中国煤层气》
2006年第4期28-30,共3页
China Coalbed Methane
关键词
掘进工作面
瓦斯钻场
钻孔抽放
Heading face
drilling site
boreholes for gas drainage
