深孔松动爆破防治煤与瓦斯突出的技术研究

A technical study on prevention and control of coal and gas outburst through deep-hole blasting loose method

为增加煤体的裂隙长度和范围,提高煤体的透气性,对煤体中进行的深孔松动控制爆破的成缝和防突机理以及爆破参数选择进行了分析研究,研究结果表明:深孔松动控制爆破能有效地增加围岩的松动区范围,增强岩体的透气性,对工作面前方煤体的泄压和瓦斯逸出具有良好的效果。

In order to increase the crack length and scope of the coal body and to improve the permeability of coal,this thesis analyzes and studies deep-hole blasting into the seam loose,the sudden burst parameters,and anti-blasting parameters.The results show that： deep-hole controlled blasting loose rock can effectively increase the scope of the loose,increase the permeability of rock on the side explosive body,and have a good effect on body of work before the side explosive escape of the pressure relief and gas.