电缆隧道火灾分析及计算机模拟

Analysis and computational simulation of cable tunnel fire

对电缆隧道火灾进行了分析,应用火灾动力学模拟软件FDS对电缆隧道火灾过程进行了计算机模拟,并对其火灾发展过程和防火保护措施进行了初步讨论。结果表明,电缆隧道为高火灾危险场所,在火灾情况下,隧道内维持较高温度,电缆将持续燃烧,火灾具有发展迅速、结构可能严重损伤、烟气量大、有害气体浓度高、扑救困难等特点,对其火灾危害性应引起足够重视。

Fire risk in cable tunnel is analyzed in this paper, and computational simulation of a typical cable tunnel fire is performed using Fire Dynamics Simulation. Fire development and fire protection measure are discussed therefore. The results show that it is with high fire risk in cable tunnel. The temperature in the tunnel is sufficient high in fire, which supports the cable combust continuously and rapidly and may cause severe damage on structure , and a largc numbers of smoke and poisonous gas was generated. Thus the fire risk in cable tunnel should be paid more attention to in fire protection design.