It described the process of coal-gas abstracts gas with exponent sign function and concluded gas gushing quantity attenuates with negative exponent.

• 用幂指数函数描述煤体瓦斯解吸瓦斯过程,瓦斯涌出速度是呈负指数衰减的。给出了工作面和采空区瓦斯涌出量的计算公式。