【摘要】 低透气性高瓦斯突出危险一直是影响矿井煤巷安全快速掘进的重耍因素,传统的防治方法往往严重影响掘进面的生产效率,为此提出的采用深孔预裂控制松动爆破方法,较好地解决了低透气性煤层煤巷掘进过程中防治瓦斯与生产的矛盾,实现了煤巷的安全快速掘进,收到了较好的经济效益。更多还原

【Abstract】 High gassy outburst seam with low gas permeability is always an important factor affecting fast and safe drivage of mine coal roadways and traditional prevention and control method usually has serious influence upon the productivity at the heading face. In this paper, the use of deep-hole pre-split to control inducing shotfiring against outburst has better solved the problems of gas control and production during coal roadway drivage with low gas permeability, achieved fast and safe drivage of coal roadway and obtained better economic benefit.更多还原