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探讨了采空区漏风与自燃点的分布规律，分析了悬空密闭阻燃防漏机理，介绍了悬空密闭设计参数与特点以及在现场应用效果。分析和实践表明，在采空区进出风侧砌筑悬空密闭是防止煤炭自燃的一项既经济又有效的简便措施，把它与均压灌洒浆等措施结合起来，效果更为明显。
The distribution law of air leakage and spontaneous combustion point in gob area is discussed. The mechanism of flame retardant and leak-proof of floating airtight is analyzed. The design parameters and characteristics of airtight enclosure and the application effect in the field are introduced. Analysis and practice show that it is an economical and effective simple measure to prevent spontaneous combustion of coal from entering and leaving the side of masonry in the goaf. The combined effect of it and the measures such as equal pressure filling and sprinkling is more obvious.