摘要
根据工作面顶板岩性,合理布置顶板走向高位钻孔起到一孔多用,即瓦斯抽放兼作灌浆孔。通过钻孔向采空区灌浆,达到采空区防灭火的目的。
High position boring holes along roof trend is deployed reasonably according to roof strata lithology, can be used in different aims, such as coal methane extraction holes and grouting holes to prevent mine from fire.
出处
《煤炭技术》
CAS
2007年第5期84-85,共2页
Coal Technology
关键词
走向高位钻孔
角度
防灭火
high position boring hole
angle
fire prevention and extinguishing
