摘要
为有效解决保德煤矿8#煤层巷道瓦斯含量大、煤层透气性差、巷道掘进速度慢等难题,将CO_(2)压裂增透技术应用于8#煤层81203工作面运输巷中未扰动的原煤区域。研究结果表明:应用CO_(2)压裂增透技术后,百米钻孔瓦斯抽采纯量同比增加1.97~2.28倍,钻孔瓦斯抽采浓度同比增加0.74~6.04倍,压裂后的煤层透气性系数为压裂前的4.54倍,增透效果明显,抽采效果显著提高,可确保安全生产。
To effectively address the challenges of high gas content,poor permeability,and slow tunneling speed in the 8#coal seam of Baode Coal Mine,CO_(2)fracturing and permeability enhancement technology was applied to the undisturbed raw coal area in the transport lane of the 81203 working face of the 8#coal seam.The research results showed that after the application of CO_(2)fracturing and permeability enhancement technology,the pure gas extraction volume from 100⁃meter borehole increased by 1.97 to 2.28 times,and the gas concentration in borehole extraction increased by 0.74 to 6.04 times.The gas permeability coefficient of coal seam after fracturing is 4.54 times that before fracturing,indicating a significant enhancement in permeability and extraction efficiency,thereby ensuring safety in production.
作者
姜鹏飞
JIANG Pengfei(Baode Coal Mine,CHN Energy Shendong Coal Group Co.,Ltd.,Xinzhou 036600,Shanxi,China)
出处
《资源信息与工程》
2024年第3期74-77,共4页
Resource Information and Engineering
关键词
瓦斯突出
增透
压裂
巷道掘进
gas outburst
permeability enhancement
fracture
tunnel excavation
