Subway train station and smoke exhaust method thereof

Abstract

The embodiment of the invention provides a subway train station and a smoke exhaust method thereof. According to the method, smoke exhaust is achieved for a station public area through tunnel fans without additionally arranging special smoke exhaust fans for smoke exhaust. A smoke exhaust duct is located at the top of a rail area of a tunnel and selectively communicates with the station public area and an inner cavity of a first air chamber, so that when a fire breaks out in the station public area, the station public area, the an inner cavity of the smoke exhaust fan and the inner cavity of the first air chamber communicate with one another, the inner cavity of the first air chamber is separated from the rail area, then smoke of the station public area is exhausted by the first fan through the smoke exhaust duct and the first air chamber, and then smoke exhaust is achieved. The smoke of the station public area does not need to pass through a shielding door, so that the shielding doordoes not need to be opened, and therefore the risk that evacuation people fall off the rail area is avoided. The smoke exhaust duct is located at the top of the rail area and does not need to occupy the space of the station public area, the layer height of a station layer is not increased due to the arrangement of the smoke exhaust duct, and the civil engineering scale and the arrangement difficulty of pipeline layout are not increased.

Description

technical field [0001] The present application relates to the field of ventilation and smoke exhaust, in particular to a subway train platform and a smoke exhaust method thereof. Background technique [0002] According to Article 28.4.10 of "Code for Metro Design" GB50157-2013 and Article 8.1.3 of "Subway Design Fire Protection Standard" GB51298-2018, when a fire breaks out in the public area of ​​the station platform, the stairs and escalators from the station hall to the platform There must be a downward airflow velocity of not less than 1.5m / s, and the smoke cannot enter the underground section. Opening the screen doors located at both ends of the platform public area and using tunnel fans to cooperate with the platform public area to exhaust smoke is the most commonly used method, but there is a risk of evacuated personnel falling into the track area. In this regard, the current treatment method of not opening the screen door has the following defects: the layout of the...

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Problems solved by technology

[0003] In view of this, the embodiment of the present application expects to provide a subway train platform and its smoke exhaust method, so that the subway train platform does not need to open the screen doors at both ends of the platform public area to realize the smoke exhaust in the platform public area, and will not cause the platform layer to be exhausted. Problems with large layers

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