Experimental study on gas product characteristics and predictive indicators in coal spontaneous combustion process and gas selection
In this paper,program heating experiments were carried out on the coal samples from the No.20101 working face of Dahaize Coal Mine with oxygen concentrations of 20.96％,18％,12％,7％,5％and 3％,respectively.The characteristics of gas products dur-ing coal spontaneous combustion were studied,and the types and concentration changes of gas products generated by coal spontaneous combustion under different oxygen concentrations were obtained,the variation laws along the temperature of O2、CO、CO2、CH4、C2H6、C3H8、C2H4,chain to alkane ratio,and alkane to olefin ratio under different oxygen concentrations were analyzed.On this basis,the pre-dictive indicator gas of coal spontaneous combustion in the No.20101 working face of Dahaize were optimized,and the research results provided a basis for predicting coal spontaneous combustion in Dahaize Coal Mine.
coal spontaneous combustionoxygen concentrationgas product characteristicspredictive indicator gas
万方数据
维普
