地铁车厢内人员新风量的研究

Study on fresh air of passenger carriage in underground railway

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。

Based on the modeling and analysis of the CO2 concentration in the tunnels and underground railway with shielding doors, points out that, in winter, with air exhausters on the top of the tracks and at the bottom of the platforms along the railway stations closed and piston air functioning only, the temperature condition can, but the fresh air can not, be satisfied in the tunnels during morning and evening rush hours. The calculation comes out that the least fresh air required in the most unfavorable tunnel during the rush hours is 41 m^3/s, which is coincident with the air volume of air exhausters installed on the top of the tracks and at the bottom of the platforms. In conclusion, if shielding doors are installed, the air exhausters must be started-up during the rush hours.