Coal and gas outburst seriously threatens the safety of underground coal mining. After the outburst, it will not only cause harm in the near-field outburst roadway but may also have a strong impact on the far-field ventilation network connected to the outburst roadway, expanding the impact of the disaster. In order to define the propagation law of shock wave and airflow induced by the outburst and its influence on the far-field ventilation network, the coal and gas outburst experimental system was used to carry out an experimental study under different air current and local resistance conditions in this paper. The results show that, under different air current states, the first overpressure peak increases with an increase of outburst pressure and decreases with an increase of propagation distance. Compared with the propagation characteristics in a windless roadway, the first overpressure peak and attenuation coefficient of shock wave propagating downwind are smaller, whereas opposite in upwind state. The local resistance enhances the impact and disturbance ahead of it and weakens that after it. When shock airflow propagates downwind, the increase of shock airflow velocity is approximately equal to the original airflow velocity in the roadway, whereas the airflow direction may reverse when the shock airflow propagates upwind. This paper provides some references to prevent the impact expansion of coal and gas outburst, which are of great significance for the optimization of ventilation network and emergency management.

煤与瓦斯突出严重威胁地下煤矿的安全。突出后，它不仅会对近场突出巷道造成伤害，而且可能会对与突出巷道相连的远场通风网络产生强烈影响，扩大灾难的影响范围。为了确定爆发引起的冲击波和气流的传播规律及其对远场通风网络的影响，采用煤与瓦斯突出实验系统，在不同的气流和局部阻力条件下进行了实验研究。在本文中。结果表明，在不同的气流状态下，第一个超压峰随突出压力的增加而增加，随传播距离的增加而减小。与无风巷道的传播特性相比，顺风传播的第一超压峰值和冲击波的衰减系数较小，而在迎风状态则相反。局部阻力会增强其前面的冲击和干扰，并削弱其之后的冲击和干扰。当冲击气流顺风传播时，冲击气流速度的增加大约等于巷道中的原始气流速度，而当冲击气流逆风传播时，气流方向可能会反转。本文为防止煤与瓦斯突出影响扩展提供参考，对于优化通风网络和应急管理具有重要意义。相反在逆风状态。局部阻力会增强其前面的冲击和干扰，并削弱其之后的冲击和干扰。当冲击气流顺风传播时，冲击气流速度的增加大约等于巷道中的原始气流速度，而当冲击气流逆风传播时，气流方向可能会反转。本文为防止煤与瓦斯突出影响扩展提供参考，对于优化通风网络和应急管理具有重要意义。相反在逆风状态。局部阻力会增强其前面的冲击和干扰，并削弱其之后的冲击和干扰。当冲击气流顺风传播时，冲击气流速度的增加大约等于巷道中的原始气流速度，而当冲击气流逆风传播时，气流方向可能会反转。本文为防止煤与瓦斯突出影响扩展提供参考，对于优化通风网络和应急管理具有重要意义。当冲击气流向上风传播时，气流方向可能会反转。本文为防止煤与瓦斯突出影响扩展提供参考，对于优化通风网络和应急管理具有重要意义。当冲击气流向上风传播时，气流方向可能会反转。本文为防止煤与瓦斯突出影响扩展提供参考，对于优化通风网络和应急管理具有重要意义。