特长城市隧道消防系统设计及参数选择

Design and Parameters Selection of Fire Fighting System in Super Long Urban Tunnel

深圳市马峦山隧道为单洞7. 9 km长的特长城市隧道,其灭火、疏散、救援等问题十分复杂,消防系统的设计目前也没有十分全面的规范支撑与实例参考。该工程消防系统采用了消火栓系统、泡沫-水喷雾联用灭火系统、固定式水成膜泡沫灭火系统、灭火器配置。系统的设置组合考虑了初期小火自救、初期火灾自动控火及灭火、消防员人工灭火的多种手段,保证火情有效控制,赢得疏散及救援时间。详述了特长城市隧道消防系统的选择方法及设计要点、重要设计参数,为类似工程提供了参考。

The Maluan Mountain Tunnel in Shenzhen is a super long urban tunnel with the distance of single hole as 7.9km.Its fire extinguishing,evacuation,rescue and other problems are very complicated.The design of fire control system had not been fully supported by specifications and reference.The fire hydrant system,foam water spray combined with fire extinguishing system,fixed water film forming fire extinguishing system and fire extinguisher were adopted in the project.In order to ensure the effective control of fire,to win the evacuation and rescue time,the system set up the combination of measures as the initial small fire self-rescue,early fire automatic fire control and fire extinguishing,firefighters artificial fire extinguishing.This paper summarized the characteristics of the long city tunnel,the selection method of the fire control system and the main design points,and expounded how to determine the important design parameters of each system,and provided some reference for the similar projects.