Study on Characteristic Parameters Laws of Gas Coal Spontaneous Combustion
ZHU Hongqing
ZHAO Hongru
LI Ke
WANG Xiaokuan
LI Shixiang
Abstract：To reveal the characteristic parameters laws of gas coal spontaneous combustion, the test system for spontaneous index gases was established to deeply analyze the characteristic parameters laws of gas coal spontaneous combustion. The results show that the laws of CO/CO2 can reflect the trend of gas coal spontaneous combustion. The critical temperature of Baode gas coal is 42℃, and the cracking temperature is 101 ℃. The production rate of CO increases slowly then increases sharply and the temperature turning point is 100 ℃. The production rate of CO2 increases with coal temperature. The production rate of CH4 increases firstly then decreases with the increase of coal temperature and the extreme point coal temperature is 130 ℃. The oxygen consumption rate increases slowly before 100 ℃, then increases rapidly when the coal temperature is higher than 100 ℃. In addition, the maxi-mum and minimum exothermic strength increase with the increasing of coal temperature. Based on the above studies, the charac-teristic parameters laws of gas coal spontaneous combustion were obtained, and it provides a theoretical basis for scientific and ef-fective prevention of gas coal spontaneous combustion.
Keywords：gas coalcoal spontaneous combustionindex gasoxygen consumption ratecharacteristic temperaturemine fire
Publication Date：2019-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 19-24,29 )