抽放钻孔周围的煤层瓦斯流动可近似视为一维径向流动，其运动规律符合达西定律。根据煤体原始瓦斯压力、吸附常数、透气性系数等参数可对抽放钻孔周围瓦斯流动进行解算。本文建立了一维径向瓦斯流动数学模型，并编制了相应软件对该模型进行计算 The gas flow in the coal seam around the drainage borehole can be approximated as a one-dimensional radial flow, and its movement law is in line with Darcy’s law. The gas flow around the drainage hole can be solved according to the parameters such as the original coal gas pressure, adsorption constant, permeability coefficient and so on. In this paper, a one-dimensional mathematical model of radial gas flow is established and the corresponding software is compiled to calculate the model