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从理论上分析了矿井发火区封闭后，封闭区发生瓦斯爆炸的原因及影响因素，研究了封闭区瓦斯爆炸各影响因素的变化规律，提出了封闭工作面时的防爆措施。
The reasons and influencing factors of gas explosion in closed area after the closed area is closed are theoretically analyzed. The variation rules of various factors of gas explosion in closed area are studied. Explosion-proof measures are given when the working face is closed.