1引言隧道通风设计中,一般均简单的按隧道内通行车辆的种类来确定相应的火灾规模、释热量(汽车释热量)。但试验证实,在隧道封闭环境内火灾工况下,所产生的释热量还受到火灾现场环境条件、隧道断面大小、通风方式等影响。所以在实际工程设计中还须考虑相应的释热量增大系数。国 1 Introduction Tunnel ventilation design, generally simple according to the types of vehicles passing through the tunnel to determine the appropriate scale of fire, heat release (car heat release). However, the tests confirmed that the amount of heat released during the fire conditions in a tunnel enclosed environment is also affected by the environmental conditions of the fire scene, the size of the tunnel section and the ventilation mode. Therefore, the actual engineering design must also consider the corresponding increase in heat release coefficient. country