东瓦斯抽放巷CO2气相压裂消突技术应用与研究

目前,玉溪煤矿东瓦斯抽放巷已施工至巷道里程866 m处,工作面煤体破碎,防突指标超标严重,严重影响掘进速度.为了杜绝瓦斯爆炸事故的发生,提高巷道掘进速率,特在工作面迎头实施CO2气相压裂消突技术.结果表明,应用该技术起到了消突的作用,能够保证巷道的正常掘进.

Application and Study of CO2 Gas Phase Fracturing Technology for Eliminating Outburst in East Gas Drainage Roadway

At present,the east gas drainage roadway in Yuxi Coal Mine has been constructed to 866 m of the roadway mileage.The coal body of the working face was broken,and the outburst prevention index exceeded the standard seriously,which seriously affected the driving speed.In order to put an end to the gas accident and improve the excavation speed,CO2 gas phase fracturing technology for eliminating outburst was applied in the working face.The results show that the application of this technology has the effect of eliminating outburst and can ensure the normal excavation of the roadway.