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This paper summarizes research on the squeezing phenomenon in tunnels excavated in weak rock. It defines squeezing as the slow, gradual deformation of surrounding rock due to stress exceeding rock strength after excavation. Previous studies on defining squeezing rock and predicting tunnel deformation are reviewed. The paper then presents a survey of squeezing tunnels in Japan and proposes a new method to predict squeezing potential and deformations. This method is applied to actual tunnel projects to valida

Author

praz

Language

EN