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为了研究煤矿井下发生爆炸后因通风系统受损停风而造成的危害,分析了爆炸冲击波对井下巷道、电气设备、风门管道等通风系统的具体损毁情况,探讨了防爆井盖被冲开后导致风流短路的危害,研究了因停风而导致井下烟流紊乱、有害气体和瓦斯浓度升高、灾害区域扩散蔓延、氧气浓度下降、甚至引发二次爆炸等各种危险因素及灾害后果.结果表明:在煤矿发生爆炸后人员未全部安全升井前应保持持续通风,应开发出必要的设备防止井下风流短路,从而减少爆炸事故造成的伤亡人数,降低灾害后果.
In order to study the damage caused by the wind in the ventilation system after explosion in the coal mine, the damage of blasting shock wave to the ventilation system in underground roadway, electrical equipment and damper pipe is analyzed. The hazards of short circuit, the various risk factors and disaster consequences of downhole smoke flow disorganization, harmful gas and gas concentration increase, disastrous area spread, oxygen concentration drop, and even secondary explosion were studied.The results showed that: Persons in the coal mine should not be fully ventilated until after they have been fully exploded. The necessary equipment should be developed to prevent short-circuit of the underground wind flow, so as to reduce the casualties caused by the explosion and reduce the consequences of the disaster.