Plastic mass flow of sand under action of pore pressure gradient

摘要

The model of poroplasticity has to include the non-associated flow rule, developed (1971) for the Coulomb media with dilatancy in the well-known form. The porous matrix equilibrium is expressed in terms of the effective (Terzaghi) stress σ{sub}(ij) and p-the pore pressure. The Darcy law is sufficient for fluid dynamics description. Let illustrate it for axial symmetry.