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基于灰色关联理论,建立了斜率关联度改进模型,以70℃作为煤自燃实验过程高低温段的分界点,定量研究了不同煤种自燃实验高温段和低温段各影响因素与煤耗氧速率之间的关联度,并以此作为衡量各因素对煤自燃影响的指标。结果表明:在高温段,挥发分和孔隙率是煤自燃最主要的影响因素;在低温段,氧浓度的影响最大,水分和灰分的影响最小。
Based on the gray relational theory, an improved slope correlation degree model was set up. With 70 ℃ as the demarcation point of high and low temperature section of coal spontaneous combustion experiment, the relationship between various influencing factors and oxygen consumption rate of coal in high temperature and low temperature range of coal spontaneous combustion As a measure of the impact of various factors on the spontaneous combustion of coal. The results showed that volatilization and porosity were the most important factors affecting spontaneous combustion of coal at high temperature. In the low temperature range, the effect of oxygen concentration was the largest and the influence of moisture and ash was the least.