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隧道火灾属于小概率事件,却可能造成重大的直接和间接损失,从设计的角度考虑隧道火灾的预防、救援及降低火灾损失显得尤为重要。近年来发生的重大隧道火灾显示,大货车着火对隧道火灾规模及升温特点具有决定性的影响,对于交通量大的长隧道,已有的隧道火灾设计理念不能满足隧道安全运营的新要求,需要修正。隧道防火设计需要根据运营特点和防火目标选择相应的火灾模型。
Tunnel fire is a small probability event, but it may cause significant direct and indirect losses. It is particularly important to consider tunnel fire prevention, rescue and fire damage reduction from a design perspective. In recent years, major tunnel fires have shown that large trucks have a decisive impact on the tunnel fire scale and heating characteristics. For long tunnels with large traffic volume, the existing tunnel fire design concept can not meet the new requirements for tunnel safety operation and need to be amended . Tunnel fire design needs to select the appropriate fire model based on operational characteristics and fire safety objectives.