【摘要】 武甲煤矿为煤与瓦斯突出矿井,为了避免工作面回采期间煤与瓦斯突出事故的发生,通过理论分析、参数设计计算等手段,对超前排放钻孔作用机理及设计参数进行研究,结果表明,当工作面存在突出危险时,在回采工作面采取超前小直径密集排放孔进行瓦斯排放,应用效果良好。更多还原

【Abstract】 Wujia Mine,as a coal and gas outburst mine,in order to avoid coal and gas outburst accidents during working face mining,theoretical analysis,parameter design calculation and other means were used to study the mechanism and design parameters of advanced discharge drilling.The results showed that when there was a serious danger in the working face,it was effective to use the small-diameter dense discharge holes in the mining working face for gas emission.更多还原