Introduction

Stresses and displacements are determined numerically for the case of a pressurized cylindrical hole in an infinite Hoek-Brown material subjected to an isotropic in situ stress field. The analytical solution for this problem is provided by Carranza-Torres and Fairhurst (1999) for associated and non-associated plastic flow with zero dilation. The non-associated flow, zero dilation results are presented here. The problem tests the Hoek-Brown model with applied field stresses in plane-strain conditions imposed in SIGMA/W. The closed-form equations are not repeated here; the reader referred to the Carranza-Torres and Fairhurst paper.