水力预裂在顶板控制与瓦斯治理方面的融合应用  

Research on Combined Application of Hydraulic Pre-cracking in Roof Control and Gas Treatment

作　　者：王国飞 WANG Guofei

机构地区：[1]山西焦煤汾西矿业集团双柳煤矿,山西柳林033300

出　　处：《山西焦煤科技》2021年第4期34-36,共3页Shanxi Coking Coal Science & Technology

摘　　要：双柳煤矿煤层开采后上隅角大面积悬顶,且随工作面推进短期内不能及时垮落,造成采空区瓦斯积聚,在23(4)11回采工作面运巷端头顶板处施工水力预裂超前切顶孔,实现顶板及时跨落,并对预裂钻孔进行二次利用,通过封孔接入工作面高负压系统进行上隅角瓦斯抽采,瓦斯浓度平均下降0.16%,治理效果明显,实现了瓦斯与顶板共治。The upper corner of the coal seam of Shuangliu coal mine suspended in a large area,and it is unable to collapse in a short time with the advancement of the working face,resulting in gas accumulation in the goaf.Construction is carried out at the roof of the roadway end of the 23(4)11 with the hydraulic pre-splitting cuts to realize the timely collapsing of the roof,and for making the reuse of the pre-splitting borehole,the borehole is connected to the high negative pressure system of the working face through the upper corner gas drainage,and the gas concentration is reduced by an average of 0.16%,the treatment effect is obvious,and the co-treatment of gas and roof is realized.

关 键 词：水力预裂超前切顶卸压 顶板控制 上隅角瓦斯 

分 类 号：TD327.2[矿业工程—矿井建设] TD712.6