摘要
低透气性瓦斯突出煤层预抽消突一直是制约巷道快速掘进的一个问题。针对这一问题,正行煤业采用深孔预裂爆破技术,增大煤层的透气性,提高煤体瓦斯抽采率,在煤体中形成一定范围的泄压抽采瓦斯区域,有效防止了煤与瓦斯突出的发生,较好地解决了低透气性突出煤层煤巷掘进过程中煤层防突和快速掘进的矛盾。
Low permeability gas outburst pre-drainage outburst elimination was the problem constrained rapid mining of roadway. Based on this problem, Zhanghang Mining Industry adopted deep hole pre-splitting blasting technology to increase the permeability of coal seam and the rate of gas extraction, pressure extraction gas area within limits was formed in coal body, which effectively prevented the coal and gas outburst, better solved the contradiction between coal seam outburst prevention and rapid mining in low permeability coal seam mining.
出处
《煤炭与化工》
CAS
2015年第2期86-88,共3页
Coal and Chemical Industry
关键词
预裂爆破
卸压抽采
防治突出
pre-splitting blasting
pressure release extraction
prevention and treatment of outburst
