一、前言煤的自燃是一个世界性问题,给井下工作面和地面带来许多困难。井下煤炭自燃的检测方法一般很多:如测量风流中一氧化碳浓度的升高,观察巷道表面冷凝现象,注意特殊气味或察看烟雾。如果煤的自热发生在深处时,第一个信 I. INTRODUCTION Spontaneous combustion of coal is a worldwide problem that brings many difficulties to the underground face and ground. Underground coal spontaneous combustion detection methods are generally many: such as measuring the concentration of carbon monoxide in the wind flow to observe the phenomenon of condensation on the surface of the tunnel, pay attention to special odor or smoke. If coal self-heating occurs in the depths, the first letter