地下车库火灾过程及消防措施的研究

采用火灾动力学模拟软件FDS对大型地下车库的火灾情景进行了数值模拟,分别讨论了隔烟卷帘、水喷淋、排烟风机以及不同措施联合作用下的消防效果。结果表明,隔烟卷帘和水喷淋都能起到良好的消防效果并且联合作用时效果更佳;而机械排烟措施则不然,它反而在一定程度上加剧了火灾的发展,与前两种措施联合作用时仍无明显效果。这说明在地下车库中,当火灾发生时,排烟系统的启动要慎重,否则可能会加剧火灾的蔓延。

INFLUENCE OF FIRE-CONTROL MEASURES ON VEHICLE FIRES IN UNDERGROUND CAR PARKS

Numerical investigations on fire process under different fire-control measures in large underground car park have been carried out in this paper. Fire Dynamics Simulator (FDS) code, based on the concept of large eddy simulation is adopted. Effects of different smoke screens, sprinklers, mechanical ventilation systems and combination measures have been studied. Predicted results show that smoke screens and sprinkler systems are effective fire control measures. Mechanical ventilation system has both positive and negative aspects in underground fires. Integrating of the three measures has significant affection in controlling the vehicle fire.