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According to the boundary integral equations, numerical simulation of wave scattering around a cavity with a circular cross-section embedded in saturated soil is obtained using integral transform methods. Examples dealing with the problems of wave scattering and dynamic stress concentration of P harmonic plane waves by a circular cavity in a half-space poroelastic soil medium were solved, and the proposed methodology was discussed. The numerical results of this study show that the dynamic stress concentration and pore pressure concentration are influenced by the degree of fluid–solid coupling as well as the pore compressibility and water permeability of saturated soil. With increased degree of fluid–solid coupling, the dynamic stress concentration improves from 1.87 to 3.42 and the scattering becomes more significant. Under the same conditions, the dynamic stress concentration factor in the case of an impermeable– permeable boundary condition is larger than that for the permeable boundary. Keywordsboundary integral equations; saturated soil; wave scattering; dynamic stress concentration; Green’s function

Dynamic Stress And Pore Pressure Concentration For A Cavity Embedded In Saturated Soil Due To The Scattering Wave Field