大范围采空区煤自燃综合治理关键技术研究

Key Technology Research of Comprehensive Treatment of Coal Spontaneous Combustion in Large Range Goaf of Mine

针对井下二盘区已回采工作面大范围采空区出现CO超标隐患,通过漏风通道检测技术查找二盘区漏风通道,分析了高温点可能存在的区域,采用均压、注氮和注浆等防灭火技术综合治理采空区自然发火,结果表明,二盘区采空区CO浓度短时间内大幅度下降,经过固氮及注浆后,采空区煤自燃问题彻底解决。

According to the carbon monoxide over standard trouble in large range goaf of mine two panel, searched the air-leakage passage with air-leakage passage detection technique, analyzed the possible area of high temperature point, resolved goaf spontaneous combustion with pressure balancing, nitrogen injection and injection grouting against fire. The results showed that the carbon monoxide decreased greatly, the coal spontaneous combustion trouble was resolved completely through nitrogen fixation and injection grouting.