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- W2890467276 abstract "When large deformation of the tunnel occurred in the swelling rock, the large deformation treatment will not only greatly delay the construction time, but also lead to instability or even collapse of the tunnel. Selecting the reasonable timing for large deformation initial support replacement can solve this problem effectively. Based on the LiRang tunnel, the deformation and stress of the tunnel in anhydrite were analysed by FLAC software after excavation. Then replace the deformed first liner at different vault settlement value. The displacement and stress of surrounding rock were analysed when the model reaches equilibrium state again. The results showed that stress concentration at the arch wall and arch foot of the tunnel, and the stress release at the vault and invert is very large after excavation. If the large deformation was treatment when the crown settlement of the tunnel reaches 90% ~95% of the final predicted settlement value, the tunnel deformation and the final stress state could be in a small value. This study can provide a reference for the treatment of large deformation in the swelling rock tunnel." @default.
- W2890467276 created "2018-09-27" @default.
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- W2890467276 date "2018-01-01" @default.
- W2890467276 modified "2023-09-27" @default.
- W2890467276 title "Study on the Treatment Timing of Large Deformation of the Tunnel in Swelling Rock" @default.
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- W2890467276 doi "https://doi.org/10.1051/matecconf/201820601005" @default.
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