A fire separation method for a subway platform

Abstract

The invention discloses a fire separation method for a subway platform. The method includes: turning on a front-end air curtain unit close to a platform layer; turning on a rear-end air curtain unit close to a station hall layer when fire smoke concentration is larger than preset smoke concentration or fire duration exceeds preset duration so as to help people of the platform layer be timely evacuated to the station hall layer; sequentially turning off the rear-end air curtain unit and the front-end air curtain unit after the evacuation of people is completed. The fire separation method has the advantages that the escape people can be simply and effectively helped be evacuated from the platform layer to the station hall layer, the working principles of the rear-end air curtain unit and the front-end air curtain unit are utilized to effectively isolate the fire smoke of escalators and the platform layer, the air blowing speed of the rear-end air curtain unit is lower than that of the front-end air curtain unit to allow the people not be affected by the air blowing direction of the air curtain units, and escape efficiency is increased.

Description

technical field [0001] The invention relates to a tunnel ventilation design method, in particular to a method for fireproof separation of subway platforms. Background technique [0002] In recent years, the rapid economic growth has driven the development of cities, and cities have successively introduced urban rail transit systems to improve the deteriorating traffic problems. With the construction of rail transit in Beijing, Shanghai, Guangzhou and other cities, the urban traffic has been greatly improved, and more cities have invested in the ranks of rail transit construction. As a densely populated place, the fire safety of the subway is a hot spot of social concern. [0003] As the most crowded area, the subway platform floor has the highest risk of fire. At the same time, it is a difficult problem in the field of subway engineering design to effectively control the spread of smoke to the station hall floor and ensure the safe evacuation of platform personnel to the st...

AI Technical Summary

Problems solved by technology

Although the above two design methods passively meet the requirements of the specification, they have obvious defects: 1. The control is complicated

The subway site was chaotic during the fire, and the complicated operation process increased the risk of fire intensification and fire spread; 2. The design was cumbersome

Engineers need to carry out detailed calculations and precise technical processing to meet theoretical requirements, and the process is cumbersome

Three, the use effect is not good

The design method obtained through theoretical calculation is likely to cause a significant enlargement of equipment selection, which leads to excessive air velocity from the station hall floor to the platform floor in case of fire, which affects the evacuation of escape personnel to the station hall floor

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