ABSTRACT
A method for estimating the global stress field from the local stress field evaluated by the field initial stress measurement is discussed. As for numerical analysis of rock stress measurement, few research examples quantitatively evaluate inhomogeneity of the three dimensional initial stress fields in rock masses. In order to grasp the effect of inhomogeneity of rock masses, a homogeneous rock model and an inhomogeneous rock model including different strata were made and the global stress fields were estimated. Furthermore, the method of back analysis of global strains was investigated by using plural stress measuring points in the region specified. As a result of these analyses, it was found that analyses of stress states in deep rock masses required consideration of structures and mechanical properties of each stratum.
