摘要
煤层赋存瓦斯在经一段时期的抽采后,会因抽采能力及封孔段卸压影响,使瓦斯抽采效果降低。二次抽放的研究及应用,很大程度上解决上述问题,提高了瓦斯抽放钻孔的利用率及抽放效果。
Coal seam gas through a period drainage, extraction capacity and sealing segment relief effects of the gas drainage effect is reduced. The secondary drainage research and applications, largely solve the above problems, and improve the utilization of gas drainage drilling and drainage effect.
出处
《山东煤炭科技》
2015年第9期62-63,共2页
Shandong Coal Science and Technology
关键词
二次抽放
瓦斯抽放率
扩散渗透
secondary drainage
drainage efficiency
diffusioosmotic
