Fire ventilation and smoke exhaust system and method for station hall of separated-island type subway underground station

Abstract

The invention relates to the technical field of ventilation and smoke exhaust of rail transit, and discloses a fire ventilation and smoke exhaust system and method for a station hall of a separated-island type subway underground station. The ventilation and smoke exhaust system comprises two mutually separated station halls, each station hall comprises two adjacent smoke prevention partitions, andthe smoke prevention partitions communicate with opposite smoke prevention partitions of the other station hall through channels; each smoke prevention partition is provided with an air supply subsystem and a smoke exhaust subsystem in a one-to-one correspondence mode, and air supply pipes of the air supply subsystems are arranged in the smoke prevention partitions corresponding to the air supplysubsystems and in the channel which communicate with the smoke prevention partitions; and smoke exhaust pipes of the smoke exhaust subsystems are arranged in the smoke prevention partitions corresponding to the smoke exhaust subsystems and the channels which communicate with the smoke prevention partitions. According to the fire ventilation smoke exhaust system for the station hall of the separated-island type subway underground station, the smoke exhaust subsystems and the air supply subsystems are respectively arranged at the two ends of the two station halls, so that the length of a air supply pipeline and the length of a smoke exhaust pipeline can be effectively reduced, the wind resistance is reduced, and the air supply smoke exhaust efficiency is improved.

Description

technical field [0001] The invention relates to the field of rail transit ventilation and smoke exhaust technology, in particular to a fire ventilation and smoke exhaust system and method for a separated island type subway underground station hall. Background technique [0002] Due to the limited space inside the city, most of the urban subway stations are underground stations. The operation safety of underground stations is a very prominent issue, and the most harmful is the casualties caused by the smoke and poisonous substances produced by combustion in subway stations and subway tunnels. Subway fires are more dangerous than ground building fires. Once a fire breaks out, the losses are often very serious. The main manifestations are: first, the underground station has insufficient oxygen supply, incomplete combustion, thick smoke, and a large amount of smoke; at the same time, the entrance and exit of the subway A large amount of smoke can only flow out from one or two o...

AI Technical Summary

Problems solved by technology

At present, there is no generally recognized effective ventilation and smoke extraction method for this type of station

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