Fireproof door and fire extinguishing method suitable for long tunnel and super-long tunnel

By installing fire doors suitable for long and extra-long tunnels inside the tunnel, and utilizing the rotating and sealing structure of the fire doors to achieve suffocation fire suppression, the problem of fire spread and smoke diffusion in tunnel fires has been solved, improving fire fighting efficiency and personnel safety.

CN117287257BActive Publication Date: 2026-06-09WUHAN ZHONGJIAO TRAFFIC ENG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN ZHONGJIAO TRAFFIC ENG CO LTD
Filing Date
2023-10-18
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing fire extinguishing technologies for tunnel fires are insufficient to effectively control the spread of fire and smoke, especially in long and extra-long tunnels, where fire-fighting equipment cannot reach the fire source in time, resulting in a high risk of structural damage and casualties.

Method used

Design a fireproof door suitable for long and extra-long tunnels. Through the spaced double-leaf fireproof doors, drive system and sealing system, the fire source can be sealed off and suffocated on both sides. The rotation and sealing structure of the fireproof door can prevent the spread of smoke.

Benefits of technology

It effectively controlled the spread of fire inside the tunnel, protected personnel safety, and solved the problems of long smoke exhaust distance and long personnel evacuation distance in traditional tunnel fires, achieving a highly efficient fire extinguishing effect.

✦ Generated by Eureka AI based on patent content.

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    Figure CN117287257B_ABST
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Abstract

The application discloses a fireproof door and a fire extinguishing method suitable for long tunnels and super-long tunnels, which comprises: a fireproof door arranged in the tunnel, comprising two pairs of opposite fireproof door bodies arranged at intervals, the fireproof door bodies being rotatably arranged on the side walls of the tunnel and used for preventing fire and controlling smoke by closing the opposite fireproof door bodies on the upstream and downstream sides of the fire source after the fire occurs; a driving system connected with the fireproof door body and used for controlling the opening and closing of the fireproof door body; and a sealing system arranged on the fireproof door body and used for controlling the flow of the smoke of the fire source and the air exchange together with the fireproof door, so as to achieve the suffocation fire extinguishing and prevent the spread of the smoke. According to the application, the oxygen can be isolated by closing the fireproof doors on the two sides of the fire source according to the different positions of the fire, so that the suffocation fire extinguishing is realized, and the problem that the fire extinguishing is difficult in the existing tunnels is solved.
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