“…The equations of motion of a TI poroelastic medium can be found in Ba et al 38 : where σ ij ( i , j = x , y , z ) and p represent stress and excess pore water pressure, respectively; u i is solid displacement; w i = n ( U i ‐ u i ) denotes relative displacement, where U i is fluid displacement and n represents porosity; ρ = (1‐ n ) ρ s + nρ f where ρ s and ρ f are the densities of the solid and fluid, respectively; r l = η f / k l and m l = a ∞ l ρ f / n in which k l is the absolute permeability coefficient, η f represents the fluid dynamic viscosity, and a ∞ l is the dynamic tortuosity. For the problem with a horizontal plane of transverse isotropy in this study, l = 1 when i = x , y and l = 3 when i = z .…”