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低瓦斯矿井中的瓦斯涌出，主要是因为通风系统的变化，引起采空区内外压差的变化，导致采空区内的瓦斯大量涌出。通过调整采空区内外压差，加强现场管理，可有效地防止瓦斯事故发生。
The gas emission in low-gas mines is mainly due to the change of ventilation system, causing the pressure difference inside and outside the goaf to change, resulting in a large amount of gas emission in the goaf. By adjusting the pressure difference inside and outside the goaf, strengthen on-site management, can effectively prevent gas accidents.