采空区中深部煤自燃治理技术研究

Study on Management Technology of Spontaneous Combustion of Deep Coal in Goaf

摘要: 内蒙古蒙泰不连沟煤业F6209工作面末采及回撤期间，工作面及回风隅角CO浓度严重超限，本文根据工作面的推采情况、遗煤分布及特点，结合工作面的地质条件，分析了煤自燃发火的原因及问题所在。在发火区域治理难度较大的情况下，通过应用普瑞特防灭火新技术成功快速地扑灭火区。F6209工作面回撤期间防灭火技术的成功实践，为我国矿井防灭火技术提供了新的参考。

Abstract: During the end mining and retraction period of F6209 working face in Mengtaibuliangou coal indus-try, Inner Mongolia, the CO concentration of the working face and the corner of return air seriously exceeded the limit. This paper analyzed the causes and problems of spontaneous combustion of coal according to the working face, the distribution and characteristics of residual coal, and the geologi-cal conditions of the working face. Under the condition that it is difficult to control the ignition area, the fire area is successfully and quickly extinguished by applying the new fire prevention technology of Pratt. The successful practice of fire prevention technology during the retracement of F6209 working face provides a new reference for mine fire prevention technology in China.