|Table of Contents|

Parametric analysis on grouting rehabilitation for shield tunnel with transverse deformations in spatially variable soil(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2026年02期
Page:
163-173
Research Field:
桥隧工程
Publishing date:

Info

Title:
Parametric analysis on grouting rehabilitation for shield tunnel with transverse deformations in spatially variable soil
Author(s):
YE Zhenwei1; 2;  ZHANG Dongming1; 2;  ZHANG Jinzhang 1; 2;  SHAO Hua3
(1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; 3. Shanghai Metro Maintenance Support Co., Ltd., Shanghai 200070, China)
Keywords:
shield tunnel;  minor-disturbance grouting;  parameter analysis;  numerical simulation;  random field
PACS:
U457
DOI:
10.19815/j.jace.2024.10090
Abstract:
Relying on an actual case of grouting to rehabilitate a metro shield tunnel with large deformation, a finite-difference deterministic analytical model was established. Based on the deterministic analysis model, a random finite difference model considering the spatial variability of soil parameters was established, and the influence of three key grouting parameters, grouting distance, grouting body height and grouting volume, on the stress and deformation response of tunnel structure was analyzed. The results show that the variability of maximum bending moments caused by variations in grouting distance, height of the grouting body and grouting volume is significantly greater than that of horizontal convergence reduction. As the grouting distance decreases, the grouting body height increases, and the grouting volume increases, the trend of maximum bending moment variation with increasing horizontal convergence reduction can be approximated as a logarithmic function. Among the grouting parameters, the maximum bending moment is most sensitive to variations in the grouting distance, while its sensitivity to variations in the height of grouting body is relatively weaker. Grouting parameters influence the strength of the interrelationship between the horizontal convergence and corresponding variation in bending moments, while the spatial variability of the soil plays a dominant role in determining the stability of the grouting effect.

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Last Update: 2026-04-01