Numerical simulation method for lagging timeliness of large deformation of tunnel under action of water-force

The invention discloses a numerical simulation method for tunnel large deformation lagging timeliness under the action of water-force, and relates to the technical field of tunnels, rock samples collected in a tunnel are utilized to carry out a triaxial penetration test, a triaxial compression test and a triaxial creep test, parameters required by numerical simulation are calculated, a tunnel model is established in FLAC3D, and the tunnel large deformation lagging timeliness is simulated. Boundary conditions of a tunnel model are defined, surrounding rock stress is set, seepage conditions are defined, an initial constitutive model and a creep constitutive model are given to the tunnel model in sequence, tunnel excavation and supporting structure construction are carried out immediately, multiple time points are set for numerical simulation calculation, cloud pictures corresponding to different time points are obtained, and the cloud pictures are used for constructing a supporting structure. The influence rule