公路隧道火灾中火区火风压研究

Research on fire pressure in fire district in road tunnel fire

借助大尺寸火灾模型试验,试验隧道内径1.8m,长度100m,试验数据采集系统采用世界领先水平的有效支持分布式控制和实时控制的串行通信网络-CAN现场总线系统。深入研究了火风压与通风风速、火灾规模之间的关系。对火区火风压进行了理论分析计算,将理论公式计算结果与试验结果进行比较,所得结果相吻合,证明了理论公式的正确性,并确定火灾救援风速为3m/s。

By means of large-scale fire model test, the relationship among fire pressure, ventilation speed and fire＇s scale has been deeply studied. The pilot tunnel＇s interior diameter is 1.8m and it is 100m long. Taking CAN field bus which reaches the world leading level,-- an effective support for distributed real-time control and the control of the serial communications network as my data acquisition system, by rationally analyzing and calculating fire pressure in the fire district, I conclude that the theoretical formula results coincide perfectly with the corresponding test results. And thus, the correctness of the theoretical formula is proved and the wind speed in fire rescue should be 3m/s.