冲压一体化联合增透技术在软煤层瓦斯治理中的应用研究

Research on the application of stamping integration combined anti-reflection technology in gas treatment of soft coal seam

针对单项水力化增透措施存在一定缺陷及软煤层存在着瓦斯治理难等问题,在分析水力冲孔及水力压裂作用于煤层的基础上,将水力冲孔及压裂对软煤层进行联合增透,并得出一套施工工艺流程,将该技术应用于红阳二矿西三下部采区1202工作面,现场试验表明:试验区域经过水力冲孔压裂后,瓦斯含量及瓦斯压力明显降低,透气性系数得到大幅度提高,增透效果明显,并且对三个区域进行瓦斯抽采情况对比,冲压一体化增透区域单孔瓦斯抽采浓度、纯量均高于对比试验考察区域,并且连续接抽200余天,瓦斯纯量抽采总量上亦明显占优。由此可以说明,冲压一体化为软煤层现场瓦斯治理提供了新思路。

For single hydraulic anti-reflection measures there are some defects and exist in soft coal seam gas control difficult problems,based on the analysis of hydraulic punching and hydraulic fracturing effect on coal seam,on the basis of the hydraulic punching and fracturing to joint anti-reflection of soft coal seam,and draw a set of construction technology and procedure,to apply the technology to Hongyang second mine three lower 1202 working face in coal mine west,field test showed that:after hydraulic punching fracturing test area,significantly lower gas content and gas pressure,gas permeability coefficient is increased greatly,anti-reflection effect is obvious,and gas extraction conditions for three areas,integration of stamping anti-reflection regional concentration of single span gas extraction,scalar are higher than contrast test area,and by pumping more than 200 days in a row,pure gas amount,extraction total also clear advantage.It can be shown that stamping integration provides a new idea for gas control in soft coal seam.