Rules of variation in hydrogen during reignition of underground fire zones of spontaneous coal combustion  

作　　者：ZHOU Fubao LI Jinhai LIU Yusheng SHAO He 

机构地区：[1]School of Safety Engineering, China University of Mining ＆ Technology, Xuzhou 221008, ChinaState Key Laboratory of Coal Resources and Safe Mining, China University of Mining ＆ Technology, Xuzhou 221008, China

出　　处：《Mining Science and Technology》2010年第4期499-503,共5页矿业科学技术（英文版）

基　　金：supported by the National Natural Science Foundation of China (No.50604014);the Program for New Century Excellent Talent Project(No.NCET-08-0838);the Research Fund of the State Key Laboratory of Coal Resources and Safe Mining,CUMT (No.09KF11)

摘　　要：In light of the possibility of reignition when unsealing the closed fire zones, the occurrence of reignition was simulated by a home-made experimental device, hydrogen variety rule from combustion to unsealing was analyzed, the three-stage generation model of hydrogen during reignition in fire zone was put forward and the probability that hydrogen was taken as an indicator gas was discussed. The results show that: when fire zone is ready to unseal, which is filled with hydrogen at a high concentration, it is more prone to reignite.In light of the possibility of reignition when unsealing the closed fire zones, the occurrence of reignition was simulated by a home-made experimental device, hydrogen variety rule from combustion to unsealing was analyzed, the three-stage generation model of hydrogen during reignition in fire zone was put forward and the probability that hydrogen was taken as an indicator gas was discussed. The results show that： when fire zone is ready to unseal, which is filled with hydrogen at a high concentration, it is more prone to reignite.

关 键 词：unsealing fire zone REIGNITION HYDROGEN generation model indicator gas 

分 类 号：TD752.1[矿业工程—矿井通风与安全] U469.72[机械工程—车辆工程]