The optimal selection of sign gas to predict coal spontaneous combustion under the condition of stereo gas extraction
Abstract：Combined the practical situation of working face in Gengcun Coal Mine of Yima Coal Industry Group and the optimization principle of sign gas,CO and C2H4 were set as the main sign gas index and C2H6 was set as the auxiliary index,the critical value of volume fraxon of CO in the goaf was quantified through the low tempe-rature oxidation experiment,and the system of sign gas was built up to predict coal spontaneous combustion of Number 23 in Gengcun Coal Mine.Meanwhile,in oder to overcome the difficulty of the gas sampling in the goaf,the relation between the gas component in the goaf and the high drainage roadway gas has been deduced,and the high drainage roadway gas has been implemented to perdict the float coal spontaneous combustion in the goaf.
Keywords：sign gaspredicthigh drainage roadwayCOC2H4
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 1-5 )