摘要
瓦斯抽采钻孔"一堵一注"封孔工艺采用孔口封堵聚氨酯,孔内注水泥浆的方法,它可以有效封堵钻孔周围裂隙,使在抽采过程中不漏气,提高瓦斯抽采负压和抽采浓度。
The process of ＂one block and one injection＂ for gas drainage drilling adopts the method of sealing polyurethane through ostiole and injecting cement slurry into hole, which can effectively block the fracture around the borehole, so that the gas leakage can be avoided during the extraction process, so that the negative pressure and the extraction concentration of the gas are improved.
作者
李田龙
LI Tian-long(Tao-er Coal Mine of Jizhong Energy Handan Mining Group Co.,Ltd.,Handan 056000,China)
出处
《价值工程》
2018年第19期115-116,共2页
Value Engineering
关键词
“一堵一注”
瓦斯抽采
封孔工艺
＂one block and one injection＂
gas extraction
sealing process
