Prediction and Analysis of Subsurface Settlement in a Double-Line Shield Tunnel
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 150, Issue 11
Abstract
The original stress equilibrium state of the soil is destroyed after the excavation of the double-line shield tunnel, resulting in the settlement of the stratum above the tunnel and bringing adverse effects on the surface buildings and subsurface pipelines near the tunnel. The reasonable prediction of subsurface settlement is significant for protecting adjacent underground structures. The wave propagation model is introduced to describe the settlement mechanism of the stratum above the tunnel based on random medium theory, and the subsurface settlement model of single-line tunnel is derived through the Fourier transform. The disturbance influence factor of double-line tunnel is defined, and the corresponding settlement model is established. The three-dimensional subsurface settlement models of single-line and double-line shield tunnels are proposed by introducing the surface displacement release rate of palm surface and maximum slope of surface vertical settlement. The models are verified using monitoring data, and the effects of the parameters on the model are analyzed.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
This study was supported by the China Postdoctoral Science Foundation (2023M742980) and the Center for Balance Architecture of Zhejiang University (Grant Nos. K20223204 and K20223205). We would also like to thank the journal editors and reviewers for their valuable comments.
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Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 150 • Issue 11 • November 2024
Copyright
© 2024 American Society of Civil Engineers.
History
Received: Dec 18, 2023
Accepted: Jun 26, 2024
Published online: Sep 13, 2024
Published in print: Nov 1, 2024
Discussion open until: Feb 13, 2025
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