Experimental Study on Spontaneous Combustion Characteristics and Index Gas of 065-2 Coal Seam in Gushan Coal Mine
WU Xian
QI Qingjie
XU Changfu
ZHOU Xinhua
Abstract：Through thermo-gravimetric and paralytic experiments of typical coal samples containing fusain layer and not containing fusain layer,study was made on the spontaneous combustion characteristics of 062-2 coal seam by taking the activation energy as the coal spontaneous combustion tendency index,and measurements were carried out on the concentration of CO,CH4 and C2 H4 in coal samples at different paralytic temperature and the variation of the concentration of these gases with temperature. The results show that that oxidation decomposition of typical coal samples belongs to the first-order chemical reaction,and the coal containing fusain has low ignition temperature and strong spontaneous combustion tendency, so it needs to be monitored and controlled emphatically;On the basis of the experimental study and combined with the general principle of the index gas selection, a spontaneous combustion index gas system with CO as the main index gas and C2 H4 as the auxiliary index gas was established, which can improve the accuracy of coal spontaneous combustion prediction and prevent the occurrence of mine fires.
Keywords：coal spontaneous combustionindex gasthermal analysis kineticsactivation energyspontaneous combustion predictionthermo-gravimetric experiment
Publication Date：2013-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 8-11 )