底板穿层钻孔预抽采面上隅角瓦斯技术的研究

Research on Pre-pumping Gas Technology in Face Upper Corner Through Floor Crossing Holes

本文系统分析了工作面瓦斯涌出来源,提出了底板穿层钻孔、本煤层顺层钻孔和工作面浅孔联合抽放瓦斯技术,并对抽放效果进行了对比分析,通过现场工业性试验,取得了良好的抽采效果。

The article analysed the sources of gas emission in working face,raised floor crossing borehole,the seam drilling and working surface of shallow hole combined gas drainage teehnology,through on--site industrial tests,and achieved good pro--pumping effect.