Destruction mechanism of gas explosion to ventilation facilities and automatic recovery technology  

作　　者：Wang Kai Jiang Shuguang Zhang Weiqing Wu Zhengyan Shao Hao Kou Liwen 

机构地区：[1]State Key Laboratory of Coal Resources and Mine Safety, China University of Mining & Technology, Xuzhou 221008, China [2]School of Safety Engineering, China University of Mining & Technology, Xuzhou 221116, China

出　　处：《International Journal of Mining Science and Technology》2012年第3期417-422,共6页矿业科学技术学报（英文版）

基　　金：the National Natural Science Foundation of China (Nos. 50674090 and 50804047);the Research Fund of the State Key Laboratory of Coal Resources and Mine Safety,CUMT (No. 3Y080015);the Key Program of the National Natural Science Foundation of China (No. 51134023)

摘　　要：In order to overcome the heavy casualties caused by gas explosion, we verified the propagation law of shock wave in pipeline and the overpressure distribution of gas explosion by similar experiments according to the analyses of reasons for casualty and ventilation system model destroyed by gas explosion in the mining face. We summarized the gas composition after the explosion and its danger, analyzed the effects of the gas explosion shock wave to ventilation system and facilities and the laws of toxic gas spread and diffusion in the ventilation network after the explosion. We presented a technical proposal to control the smoke and recover the ventilation system after a gas explosion and developed a reserve air door and control system that were embed in the lane, and could close automatically in conditions of no pressure and electricity. The results showed that the reserve air door normally opened and could close automatically controlling the smoke flow and resuming the ventilation system when the gas explosion shock wave destroyed the original shutting air door which resulted in the air short circuit.In order to overcome the heavy casualties caused by gas explosion, we verified the propagation law of shock wave in pipeline and the overpressure distribution of gas explosion by similar experiments according to the analyses of reasons for casualty and ventilation system model destroyed by gas explosion in the mining face. We summarized the gas composition after the explosion and its danger, analyzed the effects of the gas explosion shock wave to ventilation system and facilities and the laws of toxic gas spread and diffusion in the ventilation network after the explosion. We presented a technical proposal to control the smoke and recover the ventilation system after a gas explosion and developed a reserve air door and con- trol system that were embed in the lane, and could close automatically in conditions of no pressure and electricity. The results showed that the reserve air door normally opened and could close automatically controlling the smoke flow and resuming the ventilation system when the gas explosion shock wave destroyed the original shutting air door which resulted in the air short circuit.

关 键 词：Gas explosion Shock wave Destroy of the air door Airflow disorder Air network recovery 

分 类 号：TD712.74[矿业工程—矿井通风与安全] TP368.1[自动化与计算机技术—计算机系统结构]