保德煤矿CO2压裂增透技术研究
Research on CO2 fracturing and permeability enhancement technology in Baode Coal Mine
姜鹏飞1
作者信息
- 1. 国能神东煤炭集团保德煤矿,山西 忻州 036600
- 折叠
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CO2 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CO2 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.
Abstract
To effectively address the challenges of high gas content,poor permeability,and slow tunneling speed in the 8#coal seam of Baode Coal Mine,CO2 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 CO2 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.
关键词
瓦斯突出/增透/压裂/巷道掘进Key words
gas outburst/permeability enhancement/fracture/tunnel excavation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据