Abstract:Considering engineering practice,seismic wave propagation in nearly saturated rock is studied by using the viscoelastic two-phase model. This model can consider the effect of the viscosity of rock skeleton and saturation degree on the propagation of the seismic wave. The propagation characteristics of seismic wave in nearly saturated rock can be understood comprehensively and the model is more reasonable than other models for study of seismic wave propagation. The effect of saturation degree,frequency,water content on the wave velocity and attenuation coefficient are studied by numerical examples;and some valuable conclusions are given.