Aiming at the problem of gob gas control in downward mining of extreme close coal seam group,a set of innovative technical scheme was put forward.The law of gas emission of extreme close coal seam group was analyzes,and a gob gas control technology applicable to the downward mining of extreme close coal seam group was proposed based on three aspects,including drilling construction,gob gas extraction construction and gob sealing engineering,aiming at improving the safety of the downward mining of extreme close coal seam group and reducing the occurrence of gas accidents,which can provide technical support for the high-quality development of China's coal industry.
关键词
极近距离煤层群/下行开采/瓦斯治理
Key words
extreme close coal seam group/downward mining/gas control
维普
万方数据