Theory of Initial Stress Measurement in Viscoelastic Rock with Circular Solid Inclusion Cell(SI-cell)
Chiyo KATSURA, Takuo SUZUKI and Ken-ichi HIRASHIMA
Abstract:In this paper, the theory of initial stress measurement based on stress release technique for viscoelastic rock with circular solid inclusion cell (SI-cell) is described. And this theory not only uses the complex variable method and the correspondence principle between elasticity and viscoelasticity, but also considers a bonding interface between a rock and SI-cell. In addition, the problem under pure 3-dimensional loadings can be solved as semi-3-dimensional analyses. Several examples are shown by graphical results. Key Words:Stress measurement, Circular solid inclusion cell, Bonding interface, Viscoelastic medium, Finite radius over coring, Stress release method, Correspondence principle