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In order to investigate the effect of EA on the process of coal oxidation spontaneous combustion，EA was uniformly mixed with long-flame coal in Xiashijie at the mass ratios of 2%，4%，6%，8% and 10% to experiment. The contents of active functional groups and the variation characteristics of thermal transport characteristics of each sample were studied using the microscopic infrared spectroscopy test and laser thermal conductivity test. The optimal mass ratio was determined to be 8% through the evaluation of the inhibitory effect of coal oxidation spontaneous combustion. The coal spontaneous combustion temperature-programmed test was used to compare the influence of four inhibitors on the gas release of coal oxidation spontaneous combustion，and the degree of inhibition of EA on coal oxidation spontaneous combustion was further determined. The results showed that the peak areas of -CH3，-CH2，-OH and -C=O- in EA-tc are reduced，but the peak area of C-O is increased compared with RC. At the same coal temperature，the thermal diffusivity and thermal conductivity of the RC are higher than those of EA-tc，and its specific heat is lower than those of EA-tc. The average inhibition rates of thermal diffusivity，specific heat capacity and thermal conductivity of 8% EA on low-temperature oxidation process of coal samples are 20.8%，9.8% and 13.1%，respectively. Compared with RC，CO release amount of 8% EA-tc is reduced by 52.3% at 170 ℃，and the resistance rate of EA on coal oxidation spontaneous combustion is maintained at 50.5% to 72.5% at 30 to 170 ℃. The inhibitory effect of EA on coal oxidation spontaneous combustion is better than that of the other three inhibitors.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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