摘要
采用高位钻孔抽放煤层顶板裂隙带瓦斯,不断改进、合理确定钻孔的布置方式和参数,提高抽放效果,有效地控制工作面的瓦斯涌出与回风流中的瓦斯浓度,保障了工作面的安全生产。
The high - level gas drainage technology in roof fissure was applicated. The gas concentration was controlled in air ventilation after drainage result being inproved by rational parameters of drilling holes. The safe producing was achieved in mining face.
出处
《煤炭技术》
CAS
2006年第2期65-67,共3页
Coal Technology
关键词
煤矿
瓦斯
钻孔
抽放
coal mine
gas
Drilling holes
Drainage technology
