摘要
为了提高本煤层瓦斯抽采效果,对富山煤矿21051工作面超前支承压力范围内的顺层钻孔抽采效果进行了现场观测研究,结果表明：在超前支承压力范围内钻孔抽采瓦斯情况大体分为＂稳定—衰减—增长—衰减＂4个阶段,在工作面前方0~20 m范围内瓦斯抽采效果最好,应尽量保证该区域钻孔正常抽采瓦斯,从而提高本煤层瓦斯抽采效率。
To improve gas drainage effect of the coal seam being mined, the effects of gas drainage of the boreholes along seam in advanced abutment pressure in coal seams being mined were researched on 21051 working face of Fushan Coal Mine. The results show that ：in the abutment pressure range,the effects of gas drainage are roughly divided into four sections ： stable section, damped section, growth section and damped section. The area around 20 meters away from 21051 working face are the best sections for gas drainage. It is important to ensure the normal gas drainage in this area, and the gas drainage effect of coal seam being mined can be improved.
出处
《中州煤炭》
2014年第9期45-47,76,共4页
Zhongzhou Coal
关键词
超前支承压力
顺层钻孔
瓦斯抽采
advanced abutment pressure
boreholes along seam
gas drainage
