广州地铁6号线的隧道通风设计

Ventilation Design for Tunnels on Guangzhou Metro Line 6

广州地铁6号线穿越老城区,因此隧道通风设计的控制因素较多。通过简化和输入合理的边界条件和参数,运用SES程序对该线路进行计算,针对隧道内温度和风量进行分析。指出在现有配置隧道通风系统的情况下,深埋隧道内近、远期的全线温度满足要求;单端设置活塞风井的“活塞效应”作用较大,隧道区间换气量达到《地铁设计规范》规定,且增设消声器对活塞风道的作用影响不大,设计优化、合理。

Guangzhou metro line 6 passes through the old city zone, so there are many control factors for tunnel ventilation design.Through setting logical boundary conditions and parameters, software SES was adopted to calculate and analyze the temperatures in tunnels and the air quantities for tunnel ventilation.Results of the analysis indicated that the designed tunnel ventilation system temperatures in deep tunnels could meet the requirements of the criterion in the future. Piston effect would be more efficient when piston a ventilation well was set at one end and air quantities in transit tunnels could also meet the requirements of Metro Design Codes. Setting mufflers in tunnels would not influence the piston effect.