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The Face Stability Analysis of Shield Tunnels Subjected to Seepage Based on the Variational Principle

Author

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  • Zhihui Zhou

    (School of Civil Engineering, Changsha University of Science and Technology, Changsha 410004, China)

  • Tonghua Ling

    (School of Civil Engineering, Changsha University of Science and Technology, Changsha 410004, China)

  • Fu Huang

    (School of Civil Engineering, Changsha University of Science and Technology, Changsha 410004, China)

  • Min Zhang

    (School of Civil Engineering, Changsha University of Science and Technology, Changsha 410004, China)

Abstract

The stability of tunnel face remains a great challenge for tunnel engineers, especially when excavation is in a complex stratum under the water table. This paper aims to investigate the stability of soil in the front of a shield tunnel face induced by the presence of insufficient cabin pressure under the water table, on the basis of a variational principle and an upper bound theorem. The analytical expression of the rupture surface for the tunnel face is obtained, and the shapes of the rupture surface are plotted. Comparisons are made to check the present approach against the solution provided by numerical simulation techniques in order to show that the proposed method is valid. The parameter analysis indicates that the groundwater seepage has a significant effect on the range of the rupture surface for the shield tunnel face.

Suggested Citation

  • Zhihui Zhou & Tonghua Ling & Fu Huang & Min Zhang, 2022. "The Face Stability Analysis of Shield Tunnels Subjected to Seepage Based on the Variational Principle," Sustainability, MDPI, vol. 14(24), pages 1-13, December.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:24:p:16538-:d:998983
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    Citations

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    Cited by:

    1. Xi Chen & Kun Zhang & Wei Wang, 2023. "Seismic Stability Analysis of Tunnel Faces in Heterogeneous and Anisotropic Soils Using Modified Pseudodynamic Method," Sustainability, MDPI, vol. 15(14), pages 1-20, July.
    2. Junhao Zhong & Shihe Zhao & Pengqin Wang & Chuantan Hou, 2023. "Tunnel Face Stability Considering the Influence of Excess Slurry Pressure," Sustainability, MDPI, vol. 15(10), pages 1-21, May.
    3. Changchang Li & Zhengzhong Wang & Quanhong Liu, 2022. "Numerical Simulation of Mudstone Shield Tunnel Excavation with ABAQUS Seepage–Stress Coupling: A Case Study," Sustainability, MDPI, vol. 15(1), pages 1-15, December.

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