摘要
分析了高位钻孔瓦斯抽放的适用条件和合理的层位布置,在唐山矿T1452工作面和吕家坨矿5323工作面进行了应用实践,结果表明,使用该技术后唐山矿T1452工作面上隅角瓦斯浓度一直保持在0.1%~0.5%之间,抽放率可达到83%;吕家坨矿5323工作面上隅角瓦斯浓度保持在0.3%左右,抽放率52%,效果明显。
Analysis of applicable conditions and reasonable collocation of gas drainage technology through high-position drilling is made in the paper.Application practices are performed at 5323 mining face of Lujiatuo Coal Mine and T1452 mining face of Tangshan Coal Mine.The results indicate that,gas consistence at the upper corners of T1452 mining face is maintained at 0.1～0.5% after the use of this technology,and gas drainage ratio reaches 83%.While the figure at 5323 mining face is about 0.3% after the application,with 52% gas drainage ratio.That is a tangible result.
出处
《中国煤炭》
北大核心
2011年第2期84-86,共3页
China Coal
关键词
高位钻孔
采空区瓦斯
上隅角
瓦斯抽放
开滦矿区
high-position drilling
gob gas
upper corners
gas drainage
Kailuan mining area
