Research on Settlement Control of Double-line Shield Tunneling Underneath Existing Expressway

DOI

10.2991/978-94-6463-845-5_5How to use a DOI?

Keywords

Double line shield tunneling; Underpass construction; expressway; settlement control

Abstract

Shield construction in composite strata can easily lead to face collapse and instability, which in severe cases may cause significant settlement and deformation of existing highway subgrades, affecting the service life of highways. Therefore, this paper proposes corresponding control methods from the perspective of maintaining excavation face stability: using ground-penetrating radar to detect unfavorable geological factors before undercrossing, optimizing construction parameters during undercrossing based on data from test excavation sections; during undercrossing, monitoring the shield machine posture through VMT guidance system, dynamically adjusting the composition of soil conditioning agents, and using inert slurry to control segment posture. These methods can achieve minimal disturbance to the surrounding environment. Practical results demonstrate that the control measures proposed in this paper are of significant importance for ensuring the structural stability of existing highways and can provide reference for similar shield undercrossing projects.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Shangang Wang
AU  - Jinzhu Zhu
AU  - Guojiao Wen
AU  - Wen Liu
PY  - 2025
DA  - 2025/09/16
TI  - Research on Settlement Control of Double-line Shield Tunneling Underneath Existing Expressway
BT  - Proceedings of the 2025 6th International Conference on Management Science and Engineering Management (ICMSEM 2025)
PB  - Atlantis Press
SP  - 44
EP  - 50
SN  - 2667-1271
UR  - https://doi.org/10.2991/978-94-6463-845-5_5
DO  - 10.2991/978-94-6463-845-5_5
ID  - Wang2025
ER  -