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为了解决新安煤矿瓦斯治理难题,提高瓦斯治理水平和增强防突效果,在对该矿煤层赋存特征及煤层物理特性进行分析和研究的基础上,在井下开展了水力压裂技术措施。在14170工作面上巷顶板施工压裂钻孔以及导向钻孔来延长瓦斯抽采周期,提高瓦斯抽采浓度,增加瓦斯抽采流量。现场试验表明:该技术成功地解决了钻孔利用周期短、流量衰减速度快的难题,大幅度提高了瓦斯抽采的效果,对目标煤层进行了有效地卸压增透,有效地降低了施工区域的突出危险性。
In order to solve the problem of gas treatment in Xin’an coal mine, improve the level of gas treatment and enhance the effectiveness of preventing outburst, based on the analysis of the occurrence characteristics of coal seams and the physical characteristics of the coal seam, hydraulic fracturing measures were carried out in the well. In the 14170 face on the roof construction of fractured boreholes and pilot drilling to extend the gas extraction cycle, increase gas concentration and increase gas drainage flow. The field test shows that the technology successfully solved the problem of short utilization cycle and fast flow decay rate, greatly improved the effect of gas drainage and effectively relieved the pressure on the target coal seam, effectively reducing the construction cost Outstanding danger in the area.