Articles | Volume 7, issue 2
Solid Earth, 7, 493–508, 2016

Special issue: From orogenesis to geoscience in the service of society: the...

Solid Earth, 7, 493–508, 2016
Research article
01 Apr 2016
Research article | 01 Apr 2016

The Mohr–Coulomb criterion for intact rock strength and friction – a re-evaluation and consideration of failure under polyaxial stresses

Abigail Hackston and Ernest Rutter

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Cited articles

Al-Ajmi, A. M. and Zimmerman, R. W.: Relation between the Mogi and the Coulomb failure criteria, Int. J. Rock Mech. Min., 42, 431–439, 2005.
Al-Ajmi, A. M. and Zimmerman, R. W.: Stability analysis of vertical boreholes using the Mogi–Coulomb failure criterion, Int. J. Rock Mech. Min., 43, 1200–1211, 2006.
Ambrose, J.: Failure of Anisotropic Shales under Triaxial Stress Conditions, unpublished PhD thesis, Imperial College London, 265 pp., 2014.
Barton, C. A., Zoback, M. D. and Burns, K. L.: In-situ stress orientation and magnitude at the Fenton geothermal site, New Mexico, determined from wellbore breakouts, Geophys. Res. Lett., 15, 467–470, 1988.
Bernabé, Y., Mok, U., and Evans, B.: A note on the oscillating flow method for measuring rock permeability, Int. J. Rock Mech. Min., 43, 311–316, 2006.
Short summary
This was an experimental study of the strength of two rock types, over a range of pressure conditions that correspond to depths in the Earth’s crust ranging up to 12 km. Tests were carried out under different stress regimes to simulate extremes of the range of loading geometries encountered in the Earth and hence how these affect failure strength and resistance to frictional slip on faults. These experiments will promote understanding of rock behaviour in oil, gas and water reservoirs.