回采面顺槽深孔预裂爆破切顶卸压技术的应用

Application of Roof-cutting Pressure Relief Technology with Deep-hole Pre-blasting in Crossheading of Working Face

因工作面顺槽掘进过程中受相邻回采面的采动影响,导致顺槽掘进期间及后期回采过程中受压较大、维护困难;以斜沟煤矿23111工作面为工程实例,拟在该工作面的顺槽回采期间提前采用深孔爆破方法进行切顶卸压,以减小对相邻工作面顺槽掘进的影响;应用结果表明,顺槽深孔爆破切顶卸压技术切断了回采面及端头采空区的采动压力传播,显著减轻了相邻工作面顺槽掘进及回采期间的矿压显现。

Aiming at the large compression and difficult maintenance of crossheading affected by mining influence of adjacent mining face in excavation process at 23111 working face of Xiegou Colliery,the author proposes the roof-cutting pressure relief technology with deep-hole pre-blasting,which can relieve the strata behavior by cutting off the transmission of mining pressure at mining face and end goaf during excavating and stoping in crossheading of adjacent mining face.