According to domestic and international statistic data , the occurrence probability of gas explosion is not very high, but it occasionally occurs in gas abnormal effusing area of low gas mines.

• 国内外统计资料表明,高瓦斯矿井发生瓦斯爆炸事故的机率并不是很高,低瓦斯矿井的瓦斯涌出异常区却时有瓦斯爆炸事故发生。