摘要
瓦斯抽放是解决矿井瓦斯灾害事故的行之有效的措施,决定瓦斯抽放效果的关键是煤层的透气性系数,采用深孔控制预裂爆破的方法,增加煤体的裂隙长度和范围,以提高煤层透气性系数,减少抽放阻力,从而提高瓦斯的抽放效率。
The article has introduces a way of deep - hole pre - splitting blasting, which can widen and lengthen coal crack, to raise the coefficient of air permeability, reduce the suction resistance and to increase gas suction efficiency.
出处
《江西煤炭科技》
2007年第3期39-40,共2页
Jiangxi Coal Science & Technology
关键词
预裂爆破
瓦斯抽放
透气性系数
pre - splitting blasting
gas suction
coefficient of air permeability
