Abstract
The present paper describes the theoretical aspect of the determination of the stresses in rock unaffected by a borehole with an instrumented cylindrical inclusion which was established by one of the authors (Hirashima). The stress fields of the elastic matrix (isotropic or anisotropic) containing a solid cylindrical inclusion are discussed and the formulae to be used in practice to determine the stresses in rock are presented. The results of calculation by Hirashima's theory and Amadei's theory which has been published recently, are shown by several numerical examples.
