采空区液态二氧化碳惰化降温防灭火技术研究

Research on fire prevention and extinguishment by carbon dioxide in goaf

为系统研究液态二氧化碳防灭火理论与实践,介绍了二氧化碳的理化性质,分析了二氧化碳的灭火机理。通过与常用的氮气防灭火技术对比,阐述了二氧化碳防灭火技术的优势。重点推导了液态二氧化碳注入量的计算公式,分析讨论了液态二氧化碳的注入工艺和注入位置等参数。结合采空区火区治理实践,应用并验证了液态二氧化碳注入工艺和参数的正确性,形成了较完整的液态二氧化碳防灭火理论。

In order to systematically research fire prevention and extinguishment by liquid carbon hydroxide, the physicochemical property of carbon dioxide was introduced and its fire ex- tinguishing mechanism was analyzed. By comparison with fire prevention and extinguishment by nitrogen, the advantages of fire prevention and extinguishment by carbon dioxide were described. The computational formula of liquid carbon dioxide injection volume was deduced, and the injec- tion technique and injection position were discussed. The practice of fire control in goal verified the correction of injection technological parameters. So the relative intact theory of fire prevention and extinguishment by liquid carbon dioxide was formed.