... in granite, schist, and sandstone under uniaxial compression and indirect tensile tests, with reference to their respective strengths. Additionally, the influence of fine drill-holes (a circular channel across the diameter in the middle of the core in the case of uniaxial specimens, and a circular hole...

... (pump turbines) must be located considerably below the downstream water level, also calls for the construction of large underground powerhouses at great depth, which often exceeds 500 m. reservoir geomechanics borehole excavation granite principal stress Reservoir Characterization...

... and outside the plastic zone. A Maple program was written to derive the expressions of plastic zone radius and stresses when adopting either the Mohr-Coulomb criterion or the Hoek- Brown criterion. The two approaches were then compared. All analyses were conducted on two hard rock types: granite and limestone...