摘要
东庞矿为煤与瓦斯突出矿井,21218工作面轨道巷切眼位于煤与瓦斯突出危险区内,采取定向钻进技术“顺层钻孔预抽区段煤层瓦斯”的区域防突措施进行消突后,经检验,防突效果合格。该矿对21218轨道巷切眼块段进行掘进作业,期间未发生煤壁开掉渣、片帮、响煤炮等突出征兆,为矿井安全掘进提供技术保障。
Dongpang Mine with coal and gas outburst,and the cut eye of 21218 working face was located in the coal and gas outburst danger zone,and the anti-surge measures were carried out by adopting the regional pre-pumping coal seam gas in the section by directional drilling technology.The cut eye section of 21218 track roadway was mined,without coal wall dropping and rib spalling,which provided technical guarantee for the safe mining.
作者
孙笑寒
Sun Xiaohan(Dongpang Mine,Jizhong Energy Corporation Ltd.,Xingtai 054000,China)
出处
《煤炭与化工》
CAS
2021年第5期101-103,107,共4页
Coal and Chemical Industry
关键词
定向钻进
预抽效果
消突技术
directional drilling
pre-pumping effect
outburst elimination technology