An Effective Model of a Layered Medium in Which Alternating Porous and Elastic Layers Are in Slide Contact

For a medium in which porous and elastic layers alternate and there is slide contact on the interfaces, an effective model is established. This model is of three phases and includes two elastic phases and one fluid phase. Specific features of this effective model are that two waves with triangular front sets propagate and the second (slow) longitudinal wave is absent in it. In the special case where the thickness of elastic layers is very small but they continue to work as barriers for fluid particles from porous layers, the effective model is of two phases, and one of the triangular front sets disappears. Bibliography: 14 titles.