Spontaneous combustion grading early warning method based on programed heating-thermodynamics
Spontaneous combustion is the main calamity of coal mines.At present,most mines mine spontaneous combustion-easy spon-taneous combustion coal seams,and more than half of the coal mines are also at risk of natural fire.Therefore,the prophylaxis of natural ignition in coal seams has always been a key and difficult point affecting the safety production of coal mines.However,the occurrence conditions of different coal seams in different coal mines are very different,resulting in the spontaneous combustion characteristics of coal seams can not be generalized.One mine one policy,one side one policy has become an inevitable trend of spontaneous combustion control and prophylaxis.So as to clarify the natural ignition characteristics of the No.6 coal seam of Tangjiahui Mine,which is prone to spontaneous combustion,divide the spontaneous combustion stage,determine the classification early warning level,early warning index and critical value,theoretical analysis,programmed temperature test,spontaneous combustion early warning index analysis,field industri-al test and other means were used to study.Finally,the classification early warning level was effectively divided,the spontaneous com-bustion early warning system was established,and its accuracy was verified on site,which can provide reference for the prevention and control of spontaneous combustion in No.6 coal seam of Tangjiahui Coal Mine in the future.
programmed heating experimentthermodynamicsspontaneous combustiongrading early warning
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