顶板千米定向钻孔在高瓦斯煤层群瓦斯抽采中的应用
谢小平, 耿耀强
Application of Kilometer Direction-Drilling of Roof in High Gas Coal Seams Group of Gas Extraction
煤炭工程 . 2019, (12): 101 -105 .  DOI: 10.11799/ce201912021