中文摘要：

以煤巷掘进时瓦斯渗流模型为背景,根据瓦斯渗流方程、瓦斯含量方程、瓦斯气体状态方程、连续性方程,建立了煤巷掘进过程中瓦斯渗流模型,基于Comsol Mul-tiphysics软件模拟了煤巷掘进过程中周围煤体瓦斯运移规律。结果表明：巷道掘进后,周围煤体内瓦斯压力呈对称性分布,且随着径向距离的增加逐渐减小。随着时间的增加,距离巷道煤壁不同距离的瓦斯压力和瓦斯含量逐渐减小,当达到一定时间后,在巷道周围形成具有一定宽度的瓦斯卸压保护带。瓦斯渗流速度与径向距离呈负指数函数关系,巷道周围煤体瓦斯渗流速度随着径向距离的减小呈跨数量级增加,渗流速度在巷道煤壁处达到最大。现场测试结果与数值模拟结果一致,验证了数值模拟的正确性。

英文摘要：

According to the equations of gas seepage, gas content, gas state and continuity e- quation, the gas seepage model equation have been established in the process of tunneling seam roadway based on the background of gas seepage model. The gas migration law in the surrounding coal mass have been simulated based on Comsol Multiphysics. The results showed that the gas pressure in the surrounding coal mass is distributed symmetrically after tunneling and gradually decreases with increasing radial distance. Gas pressure and gas content in different distances from coal wall gradually reduces with increasing time, a certain width of gas relief protection zone has been formed in the surrounding coal mass when reaching a certain time. The relationship between gas seepage velocity and the radial distance is the negative exponential function. The gas seepage velocity in the surrounding coal mass is cross-magnitude increasing with decreasing radial dis- tance, the maximum seepage velocity is at the coal wall. The results of field test and numerical simulation results are consistent. The correctness of numerical simulation is verified.