Strength and deformation of rock subject to multiaxial compressive stresses

Journal Article · Mon Sep 01 04:00:00 EDT 1975 · Int. J. Rock Mech. Min. Sci.; (United States)

DOI:https://doi.org/10.1016/0148-9062(75)91085-2· OSTI ID:6700455

Sangha, C M; Dhir, R K

The investigation is primarily devoted to a study of the influence of confinement on the time-dependent strength of rock and the development of a simple construction for predicting the multiaxial compressive strength of rock from its triaxial behavior. These results show that confinement reduces the effect of rate of loading and with the possible exception of very low confining pressures the relative strength-time relationship is independent of confining pressure. Percentage strength-instantaneous Poisson's ratio relationships have been used to show that an increase in confinement produces a greater resistance against lateral deformation. A method, using measurements of axial strain at low stress levels, is tentatively suggested for determining the confining pressure at which the transition of the failure from brittle to ductile takes place. (38 refs.)

• Research Organization: Dundee Univ
• OSTI ID: 6700455
• Journal Information: Int. J. Rock Mech. Min. Sci.; (United States), Journal Name: Int. J. Rock Mech. Min. Sci.; (United States) Vol. 12:9; ISSN IJRMA
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
580300* -- Mineralogy
Petrology
& Rock Mechanics-- (-1989)
CONFINEMENT
DEFORMATION
MECHANICAL PROPERTIES
MECHANICS
POISSON RATIO
ROCK MECHANICS
ROCKS
STRESS ANALYSIS