INFLUENCE OF EXTERNAL STRESSES AND PORE PRESSURE ON DEFORMATION OF CRACK-LIKE INHOMOGENEITIES IN A POROELASTIC MEDIUM

摘要

The influence of applied stresses and internal fluid pressure on deformation of a random set of flat ellipsoidal inhomogeneities in a homogeneous poroe-latic medium is studied. The inhomogeneities are filled with a porous material having a skeleton much softer than those of the surrounding medium (crack-like) inclusions. The result of the calculation of strain field inside such inclusions is presented. Explicit formulas are obtained for inclusion aspect ratio changing due to external stresses and pore pressure.