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International Journal of Robotics and Automation Technology

Articles

Vol. 12 (2025)

Study on Deformation Control during Shield Tunnel Construction Beneath Existing Tunnels

DOI
https://doi.org/10.31875/2409-9694.2025.12.01
Published
03.02.2025

Abstract

This study is based on the background that the tunnel of Ningbo Metro Line 8 passes beneath the tunnel of Line 1. A three-dimensional numerical model was developed using Midas to simulate the deformation induced by the construction of the new Line 8 tunnel beneath the existing Line 1 tunnel. The results show that the maximum lateral horizontal deformation, longitudinal horizontal deformation, and vertical deformation of the Line 1 tunnel occur after the excavation of the Line 8 tunnel is completed. Notably, all deformations comply with the settlement control standards for existing tunnels in urban rail transit systems in China. After the excavation of the Line 8 tunnel is completed, the maximum surface settlement is less than the settlement control value, indicating that the excavation of Line 8 tunnel has less additional impact on the Line 1 tunnel. It is recommended that, during the construction of the new tunnel, intensive monitoring of the existing tunnel is implemented, particularly focusing on settlement in the central section, to mitigate the risk of structural damage due to excessive deformation.

References

  1. Kang Zhuang, Gong Quan-mei, He Chao. Modified Peck Equation Method for Shield Tunnel Oblique Crossing Upper Railway [J]. Journal of TongJi University, 2014; 42(10): 1562-1566. (in Chinese)
  2. Lin XT, Chen RP, Wu HN, et al. Deformation behaviors of existing tunnels caused by shield tunneling undercrossing with oblique angle [J]. Tunnelling & Underground Space Technology, 2019; 89: 78-90. https://doi.org/10.1016/j.tust.2019.03.021
  3. Wang Jian-chen, Zhang Li-ding, Zhang Cheng-ping., et al. Deformation Characteristics of Existing Tunnels Induced by Excavation of New Shallow Tunnel in Beijing [J]. Chinese Journal of Rock Mechanics and Engineering, 2014; 33(5): 947-956. (in Chinese) http://www.rockmech.org/EN/Y2014/V33/I05/947
  4. Bai Haiwei, He Haijian, Li Ling. Study on Longitudinal Deformation and Internal Forces of Upper Existing Metro Tunnel Caused by Undercrossing Tunneling [J]. Chinese Journal of Underground Space and Engineering, 2014; 10(2): 434-440. (in Chinese)
  5. Fang Ming, Zhou Cui-ying, Zhang Yi, et al. Stochastic medium model of existing tunnel settlement caused by shield construction in crossing tunnels. [J]. Acta scientiarum naturalium universitatis sunyatseni, 2016; 55(1): 80-84. (in Chinese)
  6. Li Xuefeng, Du Shouji, Zhang Dingfeng. Analysis on Influence of New Shield Tunneling on Closely Spaced Parallel Tunnel [J]. Chinese Journal of Underground Space and Engineering, 2012; 8(5): 1065-1069. (in Chinese)
  7. Li Lei, Zhang Meng-xi, Wu Hui-ming, Wang Yong-jia. Influence of short-distance multi-line overlapped shield tunnelling on deformation of existing tunnels [J]. Chinese Journal of Geotechnical Engineering, 2014; 36(6): 1036-1043. (in Chinese)
  8. Sun Y, Shen SL. Field Performance of Underground Structure During Shield Tunnel Constructed [J]. Tunneling and Underground Space Technology, 2012; 28(3): 272-277. https://doi.org/10.1016/j.tust.2011.11.010
  9. Liu H Y, Small JC, Carter JP, et al. Effects of tunnelling on existing support systems of perpendicularly crossing tunnels[J]. Computers & Geotechnics, 2009; 36(5): 880-894. https://doi.org/10.1016/j.compgeo.2009.01.013
  10. Liu H, Small J, Carter J. Full 3D modelling for effects of tunnelling on existing support systems in the Sydney region [J]. 2008; 23(4): 399-420. https://doi.org/10.1016/j.tust.2007.06.009
  11. Zhu Lei, Zhao Jingyan. Monitoring Data Analysis of Shield-Driven Construction Undercrossing the Existing Tunnel in a Short Distance [J]. Chinese Journal of Underground Space and Engineering, 2014; 10(3): 656-662. (in Chinese)