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Ventilation and smoke discharge method for train fire in subway section

A technology for trains in intervals, applied in the field of safety, can solve problems such as suffocation death, passenger poisoning, and rapid spread of fire smoke, etc., to achieve long escape time and improve the effect of subway safety

Active Publication Date: 2018-09-14
CHINA ACAD OF SAFETY SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] After a fire breaks out in a train in a subway tunnel, if the train on fire continues to move rapidly, passengers behind the fire site will be quickly poisoned and suffocated by toxic and harmful smoke; if the train on fire loses its ability to move or stops immediately for passenger evacuation, it will There will be problems such as rapid spread of fire smoke, difficulties in evacuation and escape, and limited ventilation and smoke exhaust capabilities.
[0003] At present, many scholars at home and abroad have carried out model test research and CFD numerical simulation calculation research on subway engineering or similar projects, but for the safe evacuation method of personnel and the corresponding ventilation and smoke exhaust system and There are few researches on the method; moreover, the existing subway tunnel ventilation and smoke exhaust mode is relatively single, and the design and method of the subway tunnel ventilation and smoke exhaust system are suitable for the different parking positions of the fire train and the safe evacuation mode of people at different fire positions Rarely, there is an urgent need for corresponding fire ventilation and smoke exhaust systems and methods for subway tunnel tunnels to verify

Method used

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  • Ventilation and smoke discharge method for train fire in subway section
  • Ventilation and smoke discharge method for train fire in subway section
  • Ventilation and smoke discharge method for train fire in subway section

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The subway interval tunnel fire ventilation and smoke exhaust system adopted by the method of the present invention comprises a subway interval tunnel smoke exhaust duct, an interval tunnel blower fan, an air valve and an air pavilion; the subway tunnel includes a first tunnel and a second tunnel, and the interval tunnel in the first tunnel At the junction with the station tunnel, at the junction of the interval tunnel of the second tunnel and the station tunnel, there are tuyeres, and the tuyere is connected with a smoke exhaust duct, and a fan and a damper are arranged in the smoke exhaust duct. The wind pavilions are connected.

[0029] see figure 1 and figure 2 The two parallel first tunnels 4 and the second tunnels 5 of the subway tunnel 1 shown in this embodiment are all connected with a smoke exhaust duct L, the top is connected with a smoke exhaust pavilion S, and a fan is arranged in the smoke exhaust duct. The valve controls smoke exhaust or air supply (the...

Embodiment 2

[0034] figure 2 It is a schematic diagram of the first smoke exhaust air supply mode. In the figure, × means off, √ means on, and the up and down arrows indicate the direction of air flow generated by the section tunnel fan after it is turned on.

[0035] The operation of the first smoke exhaust air supply mode is as follows: in the initial state, all section tunnel fans T, air valves (D1, D2-D5 in the figure), fire doors 111, etc. are closed; in the first tunnel 4 When the locomotive 21 of the train (the present embodiment is set as the locomotive 21) is on fire, the passengers evacuate to the end of the train that is not on fire, and open the 2 intervals at the end where the end of the subway train 2 is on fire in the first tunnel 4 is away from the subway train 2 on fire. The tunnel fan T and the damper D1 of the first branch of the corresponding smoke exhaust duct, the damper D2 of the second branch of the smoke exhaust duct, and the damper D3 of the third branch of the ...

Embodiment 3

[0037] image 3 It is a schematic diagram of the second smoke exhaust air supply mode. In the figure, × means off, and √ means on. For example, ×× means two-step operation of first closing and then still closing. The time interval between the two steps of each device is the same.

[0038] The up and down arrows indicate the direction of air flow after the section tunnel fan is turned on, and the free combination of ×, √ and up and down arrows indicates that a single function is executed in sequence, and the specific execution time interval is determined according to the requirements of the smoke exhaust mode.

[0039] The operation of the second smoke exhaust air supply mode is as follows: in the initial state, all section tunnel fans T, air valves (D1, D2-D5 in the figure), fire doors 111, etc. are closed; in the first tunnel 4 When the middle part of the subway train 2 is on fire, open the fire doors 111 of the nearest two connecting passages 11 at the two ends of the subwa...

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Abstract

The invention provides a ventilation and smoke discharge method for train fire in a subway section. A ventilation and smoke discharge system for fire of a subway tunnel is used for dealing with the fire. The ventilation and smoke discharge method comprises a first smoke discharge and air supply mode and a second smoke discharge and air supply mode; the subway tunnel comprises a first tunnel and asecond tunnel, air openings are separately formed in a junction between a section tunnel and a station tunnel of the first tunnel and a junction between a section tunnel and a station tunnel of the second tunnel, each air opening is connected with a smoke discharge air flue, and a fan and an air valve are arranged in each smoke discharge air flue; and the first smoke discharge and air supply modeis used in the circumstance that the head or tail of a train in the first tunnel catches fire, and the second smoke discharge and air supply mode is used in the circumstance that the middle of the train in the first tunnel catches fire. According to the method, the flowing direction of smoke is controlled in time by the smoke discharge air flues in the subway section tunnels when the train fire occurs in the subway section, smoke is discharged, air pressure in the tunnel is controlled, thus, poisonous smoke is not diffused to crowd, and subway safety is improved.

Description

technical field [0001] The invention belongs to the technical field of safety, and in particular relates to a ventilation and smoke exhausting method and system for train fires in a subway section. Background technique [0002] After a fire breaks out in a train in a subway tunnel, if the train on fire continues to move rapidly, passengers behind the fire site will be quickly poisoned and suffocated by toxic and harmful smoke; if the train on fire loses its ability to move or stops immediately for passenger evacuation, it will It will face difficulties such as rapid spread of fire smoke, difficulties in evacuation and escape, and limited ventilation and smoke exhaust capabilities. [0003] At present, many scholars at home and abroad have carried out model test research and CFD numerical simulation calculation research on subway engineering or similar projects, but for the safe evacuation method of personnel and the corresponding ventilation and smoke exhaust system and The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F1/00E21F1/08E21F1/14
CPCE21F1/003E21F1/08E21F1/14
Inventor 史聪灵丁伟吕敬民胥旋何理李建石杰红赵晨车洪磊侯正波穆娜娜
Owner CHINA ACAD OF SAFETY SCI & TECH
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