论文部分内容阅读
为了考察水力压裂卸压增透强化抽放快速消突的效果,以义马煤业集团义安矿FD003工作面为试验点,通过考察水力压裂前后瓦斯抽放浓度变化以及压裂后巷道内的情况的变化,得出水力压裂技术提高抽放浓度和抽放量的效果明显。试验结果表明:水力压裂后抽放浓度增大最多的是10#孔,其压裂后的抽放浓度是压裂前的19倍多,且压裂后9个孔的总平均浓度是压裂前9个孔的总平均浓度的5倍。
In order to investigate the effect of hydraulic excavation and pressure intensification intensification drainage to eliminate sudden elimination of gas, taking FD003 working face of Yi’an Coal Mine of Yima Coal Group as a test point, by investigating the change of gas drainage concentration before and after hydraulic fracturing and the roadway after fracturing Within the situation changes, come to hydraulic fracturing technology to enhance drainage concentration and drainage effect is obvious. The results show that the maximum increase of drainage concentration after hydraulic fracturing is that of No. 10 hole. The drainage density after fracturing is more than 19 times that before fracturing, and the total average concentration of 9 holes after fracturing is the pressure 5 times the total average concentration of the 9 holes before cleavage.