Experimental device for fire ventilation control research of single-head tunnel group

By designing an experimental device for multiple single-ended tunnel groups and combining a ventilation system with jet fans, axial flow fans, and control valves, the problem of smoke spread in fires in single-ended tunnel groups was solved, enabling rapid suppression of smoke spread, ensuring the safety of construction personnel, and improving the safety of tunnel construction and operation.

CN116498366BActive Publication Date: 2026-06-12TSINGHUA UNIVERSITY +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TSINGHUA UNIVERSITY
Filing Date
2023-04-28
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

The lack of effective experimental equipment in the current technology for studying the smoke spread characteristics and ventilation control during fires in single-ended tunnel groups makes it difficult to guarantee the safety of construction workers.

⚗Method used

An experimental device comprising multiple single-ended tunnel groups was designed, employing a ventilation system combining jet fans and axial flow fans. The connectivity and closure of the tunnels were adjusted by control valves, and the height and angle of the tunnels were adjusted by a lifting device. The device simulated fire scenarios of single-ended tunnel groups with different structures and studied the ventilation and smoke extraction effects in different hazardous areas.

🎯Benefits of technology

In the event of a fire, it can quickly suppress the spread of toxic and harmful fumes, reduce losses, ensure the safety of construction workers, provide experimental technical support, and improve the safety of tunnel construction and operation.

✦ Generated by Eureka AI based on patent content.

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    Figure CN116498366B_ABST
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Abstract

The application discloses an experimental device which can be used for the research on the fire ventilation control of a single-head tunnel group, wherein the left main tunnel and the middle auxiliary tunnel and the right main tunnel and the auxiliary tunnel are communicated through connecting channels respectively; the jet fans are arranged in the upstream ends of the left main tunnel, the right main tunnel and the middle auxiliary tunnel respectively; the axial flow fans are arranged in the connecting channels which are located at the left and right sides of the middle auxiliary tunnel and are closest to the blocking end; the control valves are distributed in the left main tunnel, the right main tunnel, the middle auxiliary tunnel and the connecting channels; and the operation windows are distributed on the left main tunnel, the right main tunnel and the middle auxiliary tunnel. The application can reduce the loss and guarantee the safety of personnel when the fire occurs in the special environment of the single-head tunnel group; the different dangerous areas of the single-head tunnel groups with different structures when the fire occurs can be researched, and the experimental technical support can be provided for the construction, use and operation safety of the single-head tunnel.
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