地下综合管廊通风系统设计探讨
Discussion on ventilation system design of underground utility tunnels
摘要：
结合工程实例探讨了地下综合管廊通风系统设计中的几个问题。当2个或3个防火分区作为1个通风单元时，给出了在防火墙处增设阀门来保证通风畅通的措施。根据各舱室不同的运行工况，给出了送风机出口处防火阀和排风机入口处防火阀的不同选型要求。对各舱室事故通风系统和事故后排烟系统的设置原则进行了梳理，提出热力管道舱内宜设事故通风系统。
Abstract：
This paper discusses several design problems of ventilation systems of underground utility tunnels based on the practical projects. When the ventilation compartment crosses two or three fire compartments, the measure to unblock the ventilation by adding valves on the firewall is given. According to the different operating conditions of each tunnel, the selection method of the fire dampers at the outlet of fans and the fire dampers at the inlet of exhaust fan is provided. The setting principles of the emergency ventilation systems and the smoke exhaust systems after emergency are sorted out, and it is proposed that the emergency ventilation system should be set up in the tunnel of the heat distribution pipeline.
Keywords:underground utility tunnel; ventilation compartment; fire compartment; fire damper; emergency ventilation