Study on the coexistence of gas and coal spontaneous combustion（Ⅰ）：disaster mechanism
Abstract：The investigation of gas and coal spontaneous combustion in 229 coal mines of main mining areas in China shows that 74 mines suffer from the coexistence of gas and spontaneous combustion of coal,the number of which has a increasing trend with the mining depth growing.So the coal disaster mechanism caused by the coexistence of gas and spontaneous combustion was studied,which proved that disasters arise only from the intersection area of CH4,O2 and heat in cracks.What＇s more,the mathematical model of multi-gas migrating in cracks was built upon definite data,establishing the relationship between mass concentration and velocity of gases such as N2,O2 and CH4.At last,typical disaster cases in coal mines was analyzed to verify the practicability of disaster mechanism of gas and coal spontaneous combustion coexistence.
Keywords：gasspontaneous combustion of coalcoexistencedisaster
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：7( 843-849 )