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煤的自燃发火是煤矿的一大灾害,研究煤自燃的因素具有重要的现实意义。影响煤自燃的因素很多,分为外因和内因。外因主要有氧气的供给,热交换条件,煤的赋存情况,地质因素,采矿因素等;内因主要有煤的变质程度,微生物,孔隙率,湿度,残余瓦斯含量和硫份等。在这些因素中,不同煤层的赋存条件和具体情况不同,主要因素也就不同。但是,一般情况而言,影响煤自燃的外在因素是可以人为控制的,而且还需要通过内因起作用。所以,煤本身自燃决定于内因。而主要因素一般又是煤的变质程度和
Spontaneous combustion of coal is a major disaster in coal mines. It is of great practical significance to study the factors that cause spontaneous combustion of coal. Many factors affect coal spontaneous combustion, divided into external and internal causes. External causes are mainly the supply of oxygen, heat exchange conditions, the occurrence of coal, geological factors, mining factors, etc .; internal factors include coal metamorphism, microorganisms, porosity, humidity, residual gas content and sulfur. Among these factors, different coal seams have different conditions and specific conditions, and the main factors are also different. However, in general, the external factors that affect the spontaneous combustion of coal can be artificially controlled, but also need to work through internal factors. Therefore, spontaneous combustion of coal itself depends on the internal factors. The main factor is generally the degree of coal deterioration and