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首页> 外文期刊>Fire Technology >Fire Spread Between Vehicles in Tunnels: Effects of Tunnel Size, Longitudinal Ventilation and Vehicle Spacing
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Fire Spread Between Vehicles in Tunnels: Effects of Tunnel Size, Longitudinal Ventilation and Vehicle Spacing

机译：隧道中车辆之间的火势蔓延：隧道尺寸，纵向通风和车辆间距的影响

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In a number of catastrophic tunnel fire incidents, the fire has often spread from vehicle to vehicle over large distances, occasionally hundreds of metres. Five possible means of fire spread are briefly discussed. The paper focuses on fire spread by flame impingement and investigates the conditions under which flame impingement will occur on a 4 m high HGV downstream of the initial fire. The study uses Bayesian methods to predict the probability of impingement at distances from 0 to 20 m downstream, based on experimental tunnel fire data. The influence of tunnel size, ventilation velocity and vehicle separation on the probability of impingement are discussed. In general it is shown that impingement on a downstream HGV is more likely in a smaller tunnel with a higher ventilation velocity. It is suggested that flames from a HGV fire in a tunnel will almost certainly impinge on a downstream HGV at distances of up to 20 m, and possibly much greater distances.
机译：在许多灾难性的隧道起火事件中，大火经常在很长一段距离上从车辆到车辆蔓延开来，偶尔会达到数百米。简要讨论了五种可能的火势蔓延方法。本文着重研究了火焰撞击引起的火焰蔓延，并研究了在初始火灾下游4 m高HGV上发生火焰撞击的条件。这项研究使用贝叶斯方法，根据实验性隧道火灾数据，预测了下游0到20 m处的撞击概率。讨论了隧道尺寸，通风速度和车辆间距对撞击概率的影响。总的来说，显示出在具有较高通风速度的较小隧道中，对下游HGV的碰撞可能性更大。建议隧道中的HGV火灾产生的火焰几乎可以肯定会在最远20 m（甚至更大）的距离上撞击下游HGV。

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