Abstract: In allusion to the deep immerged tunnel in the stress concentration zone，physical simulation and numerical simulation has been made in order to study its property of deforming features under high concentrated load.Digital photography-based deformation measurement technique was used in the physical simulation，and the relationship between the tunnel deformation and the time，the effect of the load variety on the tunnel deformation were obtained.In the numerical simulation the multi-linear kinematic hardening material model has been used to establish the material model，and the calculation is carried out in allusion to the result of physical simulation.The change process of the tunnel deformation and the plastic zone are obtained.The comprehensive analysis showed that the deformation of deep tunnel in stress concentration zoon was significant.While the stress is increased，the plastic zone of the tunnel adjacent rock is enlarged，the deformation of sides is more significant than the roof and floor，since the each side of the tunnel has a higher stress concentration degree.

Key words: Deep tunnel, Stress concentration, Deformation, Physical simulation, Numerical simulation