列車走行による地下鉄駅構内の空気流動 : 駅模型の検討と列車走行風の緩和 : 流体工学 , 流体機械

概要

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The flow field and the train wind reduction effect in the subway station are experimentally examined for three kinds of station model with staircases and tunnels. As the results, prototype model consisting of station and shortened tunnels with orifices can clarify the overall flow characteristics. However, this model is not able to reproduce the time history of the wind velocity at the tunnels and the staircase parts in the real subway. One-station model having the same reduced stale ratio for the tunnels and the station is generally useful to evaluate the wind velocity and the air quantity. Two-stations model connecting two one-station models is most effective to evaluate the transient flow characteristics with high accuracy. In the next place, three train wind reduction methods are tested. The one blower control method which is the tunnel ventilation in accordance with the train wind can reduce the wind velocity at a staircase about 0.5 m/s. Furthermore, two blowers control method can reduce it about 1 m/s. In the case of natural draft method, the wind reduction value is 0.7-1.1 m/s and this reduction effect becomes 1.8 times for the usual staircase with small cross section.
一般社団法人日本機械学会の論文
2001-03-25