摘要
为了解决目前开元煤矿3#煤层瓦斯抽采效果不理想的现状,采用立体交叉钻孔技术对顺层瓦斯进行抽放效果的应用研究,并与其他传统钻孔布置方式的瓦斯抽采技术进行对比分析。结果表明:开元煤矿3#煤层9804工作面经立体交叉钻孔瓦斯抽采后,其平均抽采量达到0.021 2m3/min·hm,衰减系数为0.070 7/d,抽采效果优于平面交叉布孔和平行布孔布置方式,证实了立体交叉钻孔抽放瓦斯技术的有效性。
In order to solve the present situation of the Kaiyuan coal mine 3# coal seam gas drainage effect is not ideal, the effect of three-dimensional cross-drilling on the drainage effect of the stratified gas is carried out,and compared with other conventional drilling methods. The results show that the average 100 meter extraction capacity is 0.021 2 m3/min .hm and the attenuation coefficient is 0.070 7/d after the three-piece coal mining in the 3# coal seam of Kaiyuan coal mine is better than plane cross cloth and parallel cloth arrangement. Anditverifies the effectiveness of three-dimensional cross- borehole drainage gas technology.
作者
王一帆
WANG Yi-fan(Gas Branch, Chongqing Research Institute Co., Ltd., China Coal Technology and Engineering Group, Chongqing 400037, China;State Key Laboratory of Gas Disaster Monitoring and Emergency Teehnology, Chongqing 400037, China)
出处
《煤矿机械》
北大核心
2018年第2期29-30,共2页
Coal Mine Machinery
关键词
煤矿
低渗透
立体交叉钻孔
瓦斯抽采
coal mine
low permeability
three-dimensional cross drilling
gas extraction
