Research on Deformation Control of Underpass River in Shield Tunnel Based on Orthogonal Test Method

DOI

10.2991/978-94-6463-449-5_75How to use a DOI?

Keywords

Shield Tunnel; Cross River; Muck Improvement; Numerical Simulation; Strata Deformation

Abstract

During the construction of shield tunnel under the river, the shield machine digs in the water-rich sand layer with rich water content and strong permeability, so it is difficult to control the disturbance and deformation of the stratum during the construction. In this paper, based on the shield tunnel under the river, the deformation caused by the shield tunnel under the river is studied and the safety control measures are put forward, a three-dimensional fluid-structure coupling model was established to study the sensitivity of soil silo pressure, grouting pressure and grouting layer thickness to ground deformation, and the main excavation parameters were determined. The results show that the main and secondary order of influencing sensitivity are grouting pressure, grouting layer thickness and soil bin pressure. Therefore, in the construction of river shield, the changes of synchronous grouting pressure and grouting amount should be controlled preferentially according to monitoring data and parameter feedback, and timely optimization and adjustment should be made.

Copyright

© 2024 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.

Download article (PDF)

TY  - CONF
AU  - Junhai Han
AU  - Jinlong Wang
AU  - Sheng Wang
AU  - Chaojun Mao
AU  - Ruicai Ju
AU  - Ping Yang
PY  - 2024
DA  - 2024/06/30
TI  - Research on Deformation Control of Underpass River in Shield Tunnel Based on Orthogonal Test Method
BT  - Proceedings of the 2024 8th International Conference on Civil Architecture and Structural Engineering (ICCASE 2024)
PB  - Atlantis Press
SP  - 762
EP  - 768
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-449-5_75
DO  - 10.2991/978-94-6463-449-5_75
ID  - Han2024
ER  -