Subway station hall smoke prevention and exhaust method based on real-time monitoring

A real-time monitoring and subway station technology, which is applied in earth cube drilling, mine/tunnel ventilation, mining equipment, etc. It can solve the problems of aggravating the spread of smoke, affecting the escape of personnel, and increasing the distance of smoke diffusion.

Inactive Publication Date: 2021-01-29
TIANJIN UNIV
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Problems solved by technology

However, this overall control method has certain shortcomings. When the fire source is located at the end of the station hall, opening all the smoke outlets will aggravate the spread of smoke to the other end, increasing the smoke diffusion distance
At the same time, under fire conditions, each entrance and exit of the subway station i

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  • Subway station hall smoke prevention and exhaust method based on real-time monitoring
  • Subway station hall smoke prevention and exhaust method based on real-time monitoring

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] The device is divided into two parts, one is the smoke exhaust and anti-smoke exhaust system structure as follows figure 1 As shown, it mainly includes exhaust pipes and outlets, air supply pipes and air outlets, and liftable smoke-shielding vertical wall devices located at the middle ceiling of the public area on the station hall level and at each entrance and exit passage.

[0022] Exhaust pipe and exhaust port: its main function is that under fire conditions, after the smoke sensor in the public area on the station hall floor senses the presence of smoke, the area where the smoke is first sensed will turn on the smoke exhaust fan, and through the exhaust Exhaust the smoke through the exhaust port and the exhaust pipe, and close the air supply system in this area at the same time; Air distribution system for each area.

[0023] Air supply pipe and air outlet...

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Abstract

The invention discloses a subway station hall smoke prevention and exhaust method based on real-time monitoring. The method includes the steps that when a fire occurs in a station hall layer public area, a smoke sensor in a certain subarea senses the existence of smoke firstly and transmits a signal to a smoke exhaust system; a smoke exhaust draught fan is started in the subarea, and a smoke blocking vertical wall descends at a middle ceiling of the public area; the smoke in the subarea is effectively controlled through exhaust pipes and exhaust outlet; and when the smoke spreads into a certain entrance and exit channel, the smoke sensor in the channel is triggered, and at the moment, the smoke blocking vertical wall in the channel descends. The subway station hall smoke prevention and exhaust method based on real-time monitoring aims to effectively control the smoke generated under the station hall layer fire working condition and facilitate smoke discharging, and additionally arrangea smoke control structure in the entrance and exit channel, so that the smoke spreading situation in the entrance and exit channel is reduced, and persecondarynel evacuation is facilitated.

Description

technical field [0001] The invention belongs to the field of rail transit smoke prevention and control, in particular to a real-time monitoring-based smoke control method for subway station halls. Background technique [0002] When a fire breaks out on the hall floor of a subway station or fire acceptance is performed, the smoke exhaust system is usually turned on, and the overall smoke exhaust control is carried out through uniformly arranged smoke exhaust outlets. However, this overall control method has certain disadvantages. When the fire source is located at the end of the station hall, opening all the smoke outlets will aggravate the spread of smoke to the other end and increase the smoke diffusion distance. At the same time, under fire conditions, each entrance and exit of the subway station is used as a natural supplementary air outlet to provide a certain amount of natural supplementary air for the smoke exhaust system, but the supplementary air volume has certain l...

Claims

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Application Information

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IPC IPC(8): E21F1/00E21F17/18
CPCE21F1/003E21F17/18
Inventor 叶天震王焙张斌李博林郑万东王一飞
Owner TIANJIN UNIV
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