A method for repairing transverse deformation of a shield tunnel by grouting

CN117108313BActive Publication Date: 2026-07-07CHINA RAILWAY LIUYUAN GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA RAILWAY LIUYUAN GRP CO LTD
Filing Date
2023-08-31
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Existing technologies are ineffective in addressing large lateral deformations in shield tunnels, especially in resolving the issue of unloading at the tunnel roof.

Method used

By setting grouting holes on the shield tunnel segments, jet grouting is used to reinforce the arch crown area. Micro-disturbance grouting is then performed under the support of the reinforced arch crown area to pressurize and adjust the stress on the shield tunnel segments, thereby reducing lateral convergence deformation.

Benefits of technology

It effectively reduces the lateral convergence deformation of shield tunnel segments, ensuring the safety of the tunnel structure, reliable construction safety, and strong adaptability.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN117108313B_ABST
    Figure CN117108313B_ABST
Patent Text Reader

Abstract

The application provides a shield tunnel transverse deformation grouting repair method, which comprises a shield segment, a plurality of shield segment grouting holes for grouting are formed in the shield segment, a segment two-side grouting pressurization area is arranged on both sides of the shield segment, a vault reinforcing area is arranged above the top of the shield segment, and a vault water injection soil dilution layer is arranged between the vault reinforcing area and the shield segment; the application reinforces by rotary jet grouting on the top of the transverse large deformation section of the shield segment, forcibly discharges the soil on the top of the segment under the support and protection of the grouting reinforcing layer, and adjusts the stress of the shield segment by micro-disturbance grouting pressurization on both sides of the shield segment, so that the transverse convergence deformation of the shield segment is reduced, the construction is safe and reliable, and the safety of the tunnel structure can be fully ensured.
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