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通过对有屏蔽门时地铁隧道和车厢内CO2浓度的建模与分析指出,在冬季如关闭地铁线各车站轨顶站台底的排风机,仅依靠活塞风,在早晚高峰时期能满足隧道中的温度要求,但不能满足列车内人员的卫生要求。经计算得出,最不利段隧道内早晚高峰时最小新风量为41 m3/s,此值正好与车站轨顶站台底排风机风量相吻合,说明有屏蔽门时早晚高峰时必须开启车站轨顶站台底的排风机。
Through the modeling and analysis of CO2 concentration in subway tunnels and carriages when there is a screened door, it is pointed out that in winter, the exhaust fan at the bottom of the railway station platform at the top of each station of the subway line can only rely on the piston wind and can meet the needs of the tunnel Temperature requirements, but can not meet the hygiene requirements of train personnel. It is calculated that the minimum amount of fresh air in the most unfavorable section of the tunnel at morning and evening peak is 41 m3 / s, which is in good agreement with the air volume of the exhaust fan at the top of platform at the top of the station, indicating that when the screen door is closed, Platform exhaust fan.