ABSTRACT
The paper examines the problem of the expansion of a cylindrical cavity which is located in a fluid saturated poroelastic medium. In particular, it is assumed that the elastic skeleton of the porous medium exhibits isotropic bi-modulus elastic characteristics, where the elastic properties in the tensile stress range are substantially different from the elastic properties in the compression range. A finite element technique is used to examine the transient effects of associated with the skeletal stresses, deformation and pore pressure in the medium. The results for the elastic medium with bi-modulus characteristics are compared with equivalent results for the uni-modulus porous skeleton.
