Work

Case study on the uplift of tunnel segments due to grouting layer deterioration during shield tunnel operation in karst fissure development strata

Year: 2025

Type: article

Abstract: This study investigates the causes and impacts of shield tunnel segment uplift, particularly in karst fissure strata, where groundwater changes and geological conditions are often overlooked. Through a case study and 3D finite difference modeling, it was found that deterioration of the grouting layer, exacerbated by train vibrations and groundwater erosion, forms cavities that reduce surrounding rock confinement, leading to segment uplift and elliptical deformation. This deformation increases bending moments, decreases axial force , and worsens joint misalignment and leakage. The research highlights the critical role of grouting layer integrity in preventing uplift and provides practical insights for design, construction, and maintenance to mitigate structural risks in tunnel engineering.

Source: Case Studies in Construction Materials

DOI: 10.1016/j.cscm.2025.e04553

Authors: Shengzhi Wu, Zichen Lin, Jingming Cai, Cheng Xing, Feiming Qi, Zhikang Wang

Institution: Shandong Jianzhu University

Language: English

Topic: Geotechnical Engineering and Underground Structures

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $2,660