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Abstract: The failure of tunnel can affect personal safety and even result in great economic loss. Investigating the failure process of tunnel is one of the key issues of rock mechanics. In this study, the failure process of a deep buried rock tunnel is numerically investigated by the numerical manifold method. An explicit numerical manifold method (ENMM) based on the Newmark time integration method is...
Abstract: The construction of tunnels excavated in expansive and water-rich rocks involves significant concerns for the safety of lining structures. This paper focuses on an ongoing tunnel excavated in silty mudstone within water-rich strata. Laboratory mechanical test and mineral composition analysis are conducted to investigate the expansive characteristics of rocks. It is analysed that the rocks...