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A Theoretical Calculation Method of Ground Settlement Based on a Groundwater Seepage and Drainage Model in Tunnel Engineering

Author

Listed:
  • Zhengde Wei

    (School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China)

  • Yanpeng Zhu

    (School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China)

Abstract

Seepage is ubiquitous during tunneling in areas with high groundwater tables. The ground settlement trough on a single tunnel is well described by Peck’s formula, but it cannot reflect the settlement caused by seepage. In this paper, assuming that the groundwater inside and outside the tunnel is a one-dimensional steady-state seepage condition, the groundwater seepage and drainage model of the tunnel was established. Based on the model and the principle of groundwater dynamics, the seepage flow calculation formula was derived, and the dewatering funnel curve equation of the groundwater level surface of a tunnel aquifer was obtained. A case study of a tunnel project in Gansu Province was carried out, and the influence of seepage on the effective stress of the stratum around the tunnel and the calculation of ground settlement caused by seepage were analyzed. The results show that seepage makes the effective stress of the upper soil layer of the tunnel increase, which leads to an increase in ground deformation; when the groundwater level of the tunnel is greatly lowered, the seepage has a significant influence on the vertical deformation of the stratum.

Suggested Citation

  • Zhengde Wei & Yanpeng Zhu, 2021. "A Theoretical Calculation Method of Ground Settlement Based on a Groundwater Seepage and Drainage Model in Tunnel Engineering," Sustainability, MDPI, vol. 13(5), pages 1-12, March.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:5:p:2733-:d:509912
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    Citations

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    Cited by:

    1. Luhai Chen & Baoping Xi & Yunsheng Dong & Shuixin He & Yongxiang Shi & Qibo Gao & Keliu Liu & Na Zhao, 2023. "Study on the Stability and Seepage Characteristics of Underwater Shield Tunnels under High Water Pressure Seepage," Sustainability, MDPI, vol. 15(21), pages 1-17, November.
    2. Hanna Michalak & Paweł Przybysz, 2021. "The Use of 3D Numerical Modeling in Conceptual Design: A Case Study," Energies, MDPI, vol. 14(16), pages 1-21, August.
    3. Hu Li & Qianen Xu & Yang Liu, 2021. "Method for Diagnosing the Uneven Settlement of a Rail Transit Tunnel Based on the Spatial Correlation of High-Density Strain Measurement Points," Sustainability, MDPI, vol. 13(16), pages 1-16, August.

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