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Published in:
2025 | OriginalPaper | Chapter
Rheological Consolidation Characteristics of Soil Around Tunnel Under Exacerbated Leakage Conditions Based on Boltzmann Function
Authors : Anfeng Hu, Senlin Xie, Zhirong Xiao
Published in: Proceedings of the 5th International Conference on Transportation Geotechnics (ICTG) 2024, Volume 3
Publisher: Springer Nature Singapore
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Abstract
The Boltzmann growth function is introduced to study the soil consolidation behavior caused by shield construction disturbance when the lining permeability deteriorates, and the general Voigt model is used to characterize the rheological properties of saturated soft soil. Based on the Terzaghi–Rendulic theory, the governing equations for the consolidation of saturated soft soil around the tunnel were established. The shield tunnel project in Kunming’s peat soft soil area is taken as an example to analyze the consolidation property. The results show the speed and curve shape of the excess pore water pressure dissipation are closely related to the leakage exacerbation mode of the lining. Increasing the number of Kelvin bodies results in slower dissipation of pore pressure, resulting in incomplete dissipation and pronounced step-like behavior.