Investigation of Overburden Thickness in Close Underpass River Tunnels Considering Grouting Effects

DOI

10.2991/978-94-6463-658-1_54How to use a DOI?

Keywords

Underwater tunnel; Cover thickness; Grouting measures

Abstract

This study investigates the impact of grouting measures on the overburden thickness of the Yuxi River Tunnel. Using theoretical analysis, engineering analogy, and numerical simulations, the research determines the minimum safe overburden thickness. Results show corrected thicknesses of 9.6m without grouting force and 9.2m with it. The Japanese minimum seepage method indicates an overburden thickness of 13.9m, while minimum thicknesses for grouting ranges of 2m, 4m, and 6m are 11.12m, 10.75m, and 10.42m, respectively. It can be seen that the larger the grouting range, the smaller the minimum cover thickness becomes, but its value changes less. In the actual construction, the economic rationality of the grouting layer thickness and the minimum cover thickness should be considered comprehensively.

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  - Qinglei Yuan
AU  - Baoxin Jia
PY  - 2025
DA  - 2025/03/03
TI  - Investigation of Overburden Thickness in Close Underpass River Tunnels Considering Grouting Effects
BT  - Proceedings of the 2024 10th International Conference on Architectural, Civil and Hydraulic Engineering (ICACHE 2024)
PB  - Atlantis Press
SP  - 540
EP  - 547
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-658-1_54
DO  - 10.2991/978-94-6463-658-1_54
ID  - Yuan2025
ER  -