Study of Rock Fracture by Permeability Method
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 123, Issue 7
Abstract
The permeability of sandstone was measured in triaxial tests. Within the range of confining pressures used here, permeability as a function of differential stress was found to decrease until a minimum value was reached at about 60–70% of the fracture strength, i.e., at a stress that lies between the crack-initiation stress and the stress corresponding to the volumetric strain reversal. Thereafter, permeability started to rise, and at about 85–90% of the fracture strength its rate of increase was greater. The permeability method was not sensitive enough to mark the point of crack initiation and the onset of crack coalescence. However, differential stress versus volumetric strain curves were, in general, similar to differential stress versus permeability curves. Thus, the permeability method can be successfully used to study the fracture mechanism of rocks.
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Information & Authors
Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 123 • Issue 7 • July 1997
Pages: 601 - 608
Copyright
Copyright © 1997 American Society of Civil Engineers.
History
Published online: Jul 1, 1997
Published in print: Jul 1997
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