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《Journal of China Coal Society》 2011-07
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Special thermal environment of adjacent explosions center areas after methane explosions

ZHANG Qing-hua1,2,DUAN Yu-long1,2,ZHOU Xin-quan3,TANG Han-ying1,2,QIN Mu-guang1,2(1.National Key Laboratory of Gas Disaster Detecting,Preventing and Emergency Controlling,Chongqing 400037,China;2.Methane & Fire Branch,Chongqing Research Institute,China Coal Technology & Engineering Group Corp.,Chongqing 400037,China;3.State Key Laboratory of Coal Resources and Safe Mining,China University of Mining & Technology(Beijing),Beijing 100083,China)  
The special thermal environment was analyzed to study the thermal factor that induced the sub-accident after methane explosions.The special environment was divided into two parts,the high temperature and high pressure fire flame,and the relatively high temperature and normal pressure environment of adjacent explosions center areas after methane explosions.The temperature and velocity of flame were discussed based on some theory study and some experiments which were done by some experts.The relatively high temperature and normal pressure environment of adjacent explosions center areas after methane explosions was studied based on some mathematical model,the temperature distribution of air after explosions,and numerical simulation technology.The results are as follows:most of the mine methane explosions are weak deflagration;the temperature of adjacent explosions center areas decreases along with the distance from explosion center,high temperature area moves far away from explosion center and the holding time becoming shorter and shorter.
【Fund】: 国家自然科学基金资助项目(50874062);; 国家重点基础研究发展计划(973)资助项目(2005cb221506)
【CateGory Index】: TD712.71
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