The methods based on the old statistics and firedamp content have been used to predict the gas emission in China,yet it was unsuitable and inaccurate in some special conditions.

• 长期以来；我国一直沿用传统的矿山统计法和瓦斯含量法来预测矿井瓦斯涌出量；这两种预测方法都有各自的适用条件和局限性.