Study on Optimal Embedding Dimension and Delay Time of Rock Deformation for Deep Buried Tunnel

摘要

Rock material is one kind of physical nonlinear material. Under deep buried condition, the deformation of rock system in tunnel belongs to geometric nonlinear behavior. Based on strain-softening model, applying the large deformation calculation method, the numerical simulation is conducted for construction process of a deep buried tunnel. The data information of excavation unloading deformation process of rock is extracted. Using the C-C method, the nonlinear dynamic character of rock deformation evolution is studied.