Self-adjusting structural system for tunnel crossing active faults

By utilizing gear devices and lateral constraint hinges to share the surrounding rock force in a self-adjusting structural system that allows the tunnel to pass through an active fault, the structural stability problem of the tunnel during fault displacement is solved, ensuring the safe and comfortable operation of the tunnel.

CN117266875BActive Publication Date: 2026-05-29DALIAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DALIAN UNIV OF TECH
Filing Date
2023-11-09
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing technologies are insufficient to effectively resist faulting when tunnels pass through active faults, leading to tunnel structural deformation or damage, affecting safe operation. Furthermore, existing methods are costly or cause excessive deformation, failing to meet the requirements of certain applications.

Method used

Design a self-adjusting structural system for tunnels crossing active faults, including a tunnel, a displacement space, a vertical adjustment mechanism, and a lateral constraint hinge mechanism. By utilizing gear devices and lateral constraint hinges to share the surrounding rock force, the tunnel can achieve adaptive adjustment and maintain structural stability.

Benefits of technology

By using a self-adjusting structural system, the impact of fault displacement on the tunnel structure is eliminated or largely eliminated, maintaining the tunnel's vertical flatness and stability, and ensuring driving comfort and safety in highway and railway tunnels.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a self-adjusting structure system of a tunnel crossing an active fault, which comprises a tunnel, a displacement space, a vertical adjusting mechanism and a horizontal constraint hinge mechanism; the tunnel in the lower wall rock and the lower wall rock are provided with the displacement space, and the vertical adjusting mechanism and the horizontal constraint hinge mechanism are arranged in the displacement space; the vertical adjusting mechanism comprises a gear device, which is connected with the inner wall of the displacement space and the outer wall of the tunnel respectively; after the active fault dislocation, the lower wall rock moves downward, the upper wall rock can clamp the tunnel, the tunnel moves upward relative to the lower wall rock, the gear device has a brake function to provide a vertical upward tension for the tunnel arranged in the lower wall rock, and the position of the tunnel in the vertical direction is kept unchanged; the horizontal constraint hinge mechanism for providing the horizontal displacement constraint for the tunnel is arranged on both sides of the tunnel. The application has the function of self-adjusting according to the fault dislocation amount, can reasonably distribute the fault dislocation amount to the tunnel section, and can guarantee the stability of the tunnel structure.
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