厦门东渡路下穿隧道排烟系统有效性测试

Effectiveness test of smoke exhaust system of Xiamen Dongdu Road underpass tunnel

采用FDS模拟和现场热烟试验研究厦门东渡路下穿隧道发生汽车火灾时,隧道内的烟气蔓延、能见度、危险高度处温度情况。模拟结果和热烟试验效果基本一致,表明隧道中部设置的敞开排烟口可将隧道划分为南北两个防烟区段,整个模拟过程烟气未蔓延至隧道南封闭段,北封闭段内疏散路径能见度、危险高度处温度均满足人员安全疏散条件。

Using FDS simulation and hot smoke test, the tunnel smoke spreading, visibility, temperature at the dangerous height when car fire accident happens at the Xiamen Dongdu Road underpass tunnel were studied. The simulation result was mostly the same with the hot smoke test, which showed that, the open exhaust port at the middle of the tunnel can divide the tunnel into smoke sections of south and north; during the simulation, the smoke didn＇t spread to the south section; the visibility, temperature at the dangerous height of north section can satisfy the safety evacuation requirement.