杜儿坪矿73803工作面注氮防灭火应用研究

Application Study on Nitrogen Injection for Fire Extinguishing on 73803 Working Face of Du’erping Coal Mine

针对杜儿坪矿73803综采工作面出现自燃发火预兆并有进一步发展扩大的趋势,提出了采空区注氮方式防火措施,并在该工作面进行了实际应用。结果表明,采取注氮防灭火措施后,各地点CO浓度均明显下降,防火效果显著。

IN the light of that the omen of spontaneous fire appears on 73803 working face of Du’erping Coal Mine and the spontaneous fire has further developing and enlarging trend, this paper puts forward the measure for fire extinguishing with nitrogen injection in worked out section, and makes practical application on 73803 working face. The results show that after adopting the measure for fire extinguishing with nitrogen injection, the concentration of CO in each point is obviously reduced, and the fire prevention effect is remarkable.