在分析掘进巷道瓦斯涌出来源的基础上,根据质量守恒定律得出了掘进巷道停风后巷道内瓦斯浓度的计算公式,利用Fluent软件模拟了掘进巷道停风后瓦斯涌出分布的情况,模拟结果与理论分析结果较一致,通过算例计算了瓦斯浓度在巷道内某一点某一时刻达到5%所需要的时间,该研究可以为估计停风后巷道内聚集的瓦斯量、瓦斯浓度分布和排放瓦斯措施的制定提供了一定的参考和依据。 Based on the analysis of the source of gas emission in roadway driving, the formula of gas concentration in the roadway after the wind-driven roadway is stopped is obtained based on the law of conservation of mass. The gas emission distribution after tunneling is stopped is simulated by Fluent software. The results are in good agreement with the theoretical analysis. The time required for gas concentration to reach 5% at a certain point in the roadway is calculated by an example. This study can be used to estimate the gas concentration in the roadway after the windshed and the gas concentration distribution and Discharge gas measures to provide a certain reference and basis.