On Hydromechanical Interaction during Propagation of Localized Damage in Rocks

This paper provides a mathematical description of hydromechanical coupling associated with propagation localized damage. The framework incorporates an embedded discontinuity approach and addresses the assessment both hydraulic mechanical properties in region intercepted by fracture. Within this approach, internal length scale parameter is explicitly employed definition equivalent permeability as well tangential stiffness operators. effect progressive evolution damage on hydro-mechanical examined law derived governing variation continuing deformation. verified numerical study involving 3D simulation axial splitting test carried out saturated sample under displacement fluid pressure-controlled conditions. finite element analysis Polynomial-Pressure-Projection (PPP) stabilization technique fully implicit time integration scheme.