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主持人:我是从事煤矿生产的一线人员,因我矿具有瓦斯危害,请问:一般发生瓦斯爆炸后,“二次爆炸”是如何形成的?矿井瓦斯连续爆炸的原因是什么?贵州立守义立守义先生:当发生瓦斯爆炸后,在爆炸地点,由于空气稀薄,温度急剧下降,水蒸气凝结成冰,在爆源附近迅速形成低压区,因而爆炸波又反向冲击。这对巷道的破坏性更大。在低压区迅速积聚瓦斯,如反向冲击的空气中含有足够的瓦斯和氧气,又有引爆火源,就形成二次爆炸。反向冲击又称回程冲击,遇难人员倒
Moderator: I am a front-line personnel engaged in coal production, because mine has gas hazards, may I ask: After the general gas explosion, “second explosion ” is how the formation? Mine continuous explosion of gas is what? Mr. Justice Shouyi: When a gas explosion occurs, at the place of explosion, due to the thin air, the temperature drops sharply and water vapor condenses into ice, and a low-pressure zone is rapidly formed near the explosion source. As a result, the explosion wave is oppositely impacted. This is even more damaging to the roadway. Rapid accumulation of gas in the low pressure area, such as reverse impact of the air contains enough gas and oxygen, but also ignited the source of fire, the formation of the second explosion. Reverse impact, also known as return impact, the victims fell