According to the underground pressure distribution rule and the separation control function of drainage borehole, the shallow hole drainage technology is studied and tested by using the characteristic that the gas permeability may have an obvious increase
According to the underground pressure distribution rule and the separation control function of drainage borehole, the shallow hole drainage technology is studied and tested by using the characteristic that the gas permeability may have an obvious increase
根据矿山压力分布规律和抽放钻孔的隔断控制作用，并利用工作面前方煤体受采动卸压后透气性显著提高这一特性，研究并试验了却压区浅孔抽放技术，获得了该抽放技术的工艺参数。