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Stability Analysis of Tunnel Surrounding Rock When TBM Passes through Fracture Zones with Different Deterioration Levels and Dip Angles

Author

Listed:
  • Mingtao Ji

    (School of Civil Engineering, Qingdao University of Technology, Qingdao 266520, China
    Qingdao Metro Group Co., Ltd., Qingdao 266035, China)

  • Xuchun Wang

    (School of Civil Engineering, Qingdao University of Technology, Qingdao 266520, China)

  • Minhe Luo

    (School of Civil Engineering, Qingdao University of Technology, Qingdao 266520, China)

  • Ding Wang

    (State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Beijing 100083, China
    School of Mechanical Electronic & Information Engineering, China University of Mining and Technology, Beijing 100083, China)

  • Hongwei Teng

    (School of Civil Engineering, Qingdao University of Technology, Qingdao 266520, China)

  • Mingqing Du

    (School of Civil Engineering, Qingdao University of Technology, Qingdao 266520, China)

Abstract

In fracture zones, tunneling with a double-shield Tunnel Boring Machine (TBM) presents significant challenges, including deformation overrun of the surrounding rock, TBM jamming, and excavation face collapse. To assure the tunnel construction safety and efficiency, it is necessary and crucial to conduct a stability analysis of the tunnel surrounding rock when a TBM passes through the fracture zones. The tunnels from Jiadingshan Road Station to Anshan Road Station in Qingdao Metro Line 8 are constructed by double-shield TBMs. It inevitably passes through fracture zones with different deterioration levels and dip angles. In this study, based on this construction section, numerical models of fracture zones with different deterioration levels and dip angles were developed to analyze the displacements of tunnel vaults, inverts, and haunches. In addition, the maximum shear stresses of the surrounding rock were analyzed. Finally, the displacement and shear stress variation patterns of the surrounding rock with different deterioration levels and dip angles were obtained. The findings reveal the stability behavior of tunnels under various fracture zones. They can serve as a valuable reference and theoretical foundation for future tunnel construction projects utilizing double-shield TBMs in areas with fracture zones.

Suggested Citation

  • Mingtao Ji & Xuchun Wang & Minhe Luo & Ding Wang & Hongwei Teng & Mingqing Du, 2023. "Stability Analysis of Tunnel Surrounding Rock When TBM Passes through Fracture Zones with Different Deterioration Levels and Dip Angles," Sustainability, MDPI, vol. 15(6), pages 1-15, March.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:6:p:5243-:d:1098507
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    Cited by:

    1. Minhe Luo & Ding Wang & Xuchun Wang & Zelin Lu, 2023. "Analysis of Surface Settlement Induced by Shield Tunnelling: Grey Relational Analysis and Numerical Simulation Study on Critical Construction Parameters," Sustainability, MDPI, vol. 15(19), pages 1-21, September.

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