近十年来,由于矿井空气的分析方法有了显著的改进,做为自然发火初期阶段的最适标准,利用气体分析能明显达到目的,因而对煤的常温氧化而发生的气体进行了反复试验。文内利用现有的分析技术,对英国生产的从无烟煤到高挥发分低品位的所有煤炭的分析结果作了概述。研究结果证明了以下几点:即自然发火初期阶段的最适指标就是 In the past ten years, as the method of mine air analysis has been significantly improved, as the most appropriate standard for the initial stage of spontaneous combustion, the gas analysis can obviously achieve its goal. Therefore, the gas generated at room temperature by coal has been repeatedly tested. The text summarizes the results of the analysis of all coal produced in the United Kingdom, ranging from anthracite to high-volatile, low-grade coal using existing analytical techniques. The result of the research proves the following: The best indicator of the initial phase of spontaneous combustion is