Compatibility of different methodologies for the determination of elastic parameters of intact anisotropic rocks

• Published in: International journal of rock mechanics and mining sciences (Oxford, England : 1997) England : 1997), 1999-10, Vol.36 (7), p.919-940
• Main Authors: Talesnick, M.L, Bloch-Friedman, E.A
• Format: Article
• Language: English
• Subjects: Applied sciences; Buildings. Public works; Earth sciences; Earth, ocean, space; Engineering and environment geology. Geothermics; Engineering geology; Exact sciences and technology; Geotechnics; Soil mechanics. Rocks mechanics
• ISSN: 1365-1609; 1873-4545
• DOI: 10.1016/S0148-9062(99)00049-2

The importance of accounting for the mechanical anisotropy of rock in rock engineering has been thoroughly demonstrated. A standard method for determining the required parameters for the constitutive description of anisotropic rocks is less thoroughly accepted. Three different testing methodologies have been carried out on three different materials in an attempt to consider the compatibility of the experimental results. The testing methodologies included uniaxial compression testing, diametrical loading of Brazilian disks and hollow cylinder testing. The material tested included an isotropic aluminum, a relatively stiff bedded sandstone and a soft porous homogeneous nonlinear chalk. The test results and analysis clearly illustrate that the different testing methodologies result in very similar deformation parameters. The testing procedures also illustrate that material nonlinearity can also be anisotropic.