Fire test device and method for subway turn-back track

A test device and test method technology, applied in the direction of educational appliances, teaching models, instruments, etc., can solve problems such as difficulty in smoke, threatening personnel safety evacuation, etc.

Inactive Publication Date: 2017-01-11
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a fire test device and method for the subway turnback line to solve the problem that when the fire train stops in the turnback tunnel and its a

Method used

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  • Fire test device and method for subway turn-back track
  • Fire test device and method for subway turn-back track
  • Fire test device and method for subway turn-back track

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0037] like figure 1 As shown, the embodiment of the present invention provides a fire test device for the subway switchback line, the fire test device can be proportionally reduced according to the actual size of the subway tunnel 1:5, the fire test device includes an uplink tunnel 1, a downlink tunnel 2 and a return tunnel 3, wherein the two ends of the return tunnel 3 communicate with the uplink tunnel 1 and the downlink tunnel 2 respectively.

[0038] An uplink tunnel fan 4 is provided in the uplink tunnel 1, and a downlink tunnel fan 5 is provided in the downlink tunnel 2, wherein the uplink tunnel fan 4 and the downlink tunnel fan 5 are forward and reverse fans for Simulation of longitudinal ventilation patterns in real subway tunnels.

[0039] In this embodiment, the uplink tunnel fan 4 and the downlink tunnel fan 5 are correspondingly arranged at the same end of the uplink tunnel 1 and the downlink tunnel 2 .

[0040] Multiple groups of jet fans 6 are arranged on the...

Embodiment 2

[0049] The embodiment of the present invention provides a kind of fire test method that is used for subway switchback line, adopts the fire test device described in embodiment 1 to carry out the test, specifically comprises the following steps:

[0050] Place the train model in the up tunnel.

[0051] Set the fire source point on the bottom embankment of the train model, and set the fire source point on the head of the train model.

[0052] The oil pool fire is used as the fire source, and the fire source is placed on the fire source point to simulate the fire state of the train model in the upward tunnel.

[0053] When the train model catches fire in the uplink tunnel, the uplink tunnel fan in the uplink tunnel and the jet fan in the reentry tunnel are turned on at the same time to exhaust smoke. The wind direction is from the down tunnel to the up tunnel.

[0054] When the train model catches fire in the uplink tunnel, the smoke flow characteristic data of the uplink tunnel ...

Embodiment 3

[0062] The embodiment of the present invention provides a kind of fire test method that is used for subway switchback line, adopts the fire test device described in embodiment 1 to carry out the test, specifically comprises the following steps:

[0063] Place the train model in the down tunnel.

[0064] A fire source point is set on the bottom subgrade of the train model, and the fire source point is set at the rear of the train model.

[0065] The gas fire is used as the fire source, and the fire source is placed on the fire source point to simulate the smoke exhaust measures when the train model is in the down tunnel.

[0066] When the train model catches fire in the down tunnel, the down tunnel fan in the down tunnel and the jet fan in the reentry tunnel are turned on at the same time to exhaust the smoke. The wind direction is from the upward tunnel to the downward tunnel.

[0067] When the train model catches fire in the down tunnel, the smoke flow characteristic data o...

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Abstract

The invention relates to the technical field of fire tests, and particularly relates to a fire test device and method for a subway turn-back track. The fire test device comprises an uplink tunnel, a downlink tunnel and a turn-back tunnel, and is characterized in that two ends of the turn-back tunnel are respectively connected with the uplink tunnel and the downlink tunnel, both the uplink tunnel and the downlink tunnel are provided with a tunnel fan, and the top part of the inner wall of the turn-back tunnel is provided with multiple groups of jet fans. In allusion to the condition that a train on fire stops in the turn-back tunnel or the uplink tunnel and the downlink tunnel which are adjacent to the turn-back tunnel, the fire test device can guide smoke to flow in a limited area and be discharged timely through controlling the uplink tunnel fan, the downlink tunnel fan and the jet fans, thereby creating a safe path for personnel evacuation in an emergency circumstance.

Description

technical field [0001] The invention relates to the technical field of fire tests, in particular to a fire test device and method for subway switchback lines. Background technique [0002] As a narrow and long underground confined space, the fire safety of tunnels has always been a hot issue concerned by relevant scholars at home and abroad. At present, the research on single-hole tunnel fire has established the prediction model of the maximum temperature above the fire source, the temperature vertical and horizontal attenuation model, the longitudinal distribution model of toxic gas, the optimization model of shaft smoke exhaust efficiency, and the critical wind speed prediction model. Most of these prediction models Based on the fitting analysis of small-scale experimental data, some models are adopted in the smoke control design of subways and highway tunnels and the compilation of standards and specifications. [0003] The prior art models are all based on the dimension...

Claims

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Application Information

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IPC IPC(8): G09B25/04
CPCG09B25/04
Inventor 钟茂华刘畅田向亮史聪灵
Owner TSINGHUA UNIV
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