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AGU: Journal of Geophysical Research, Solid Earth

 
Abstract
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Abstract

JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 84, NO. B7, PP. 3532-3536, 1979
doi:10.1029/JB084iB07p03532

A New Model for Analyzing the Effect of Fractures on Compressibility

J. B. Walsh

Department of Earth and Planetary Sciences, Massachusetts Institute of Technology Cambridge, Massachusetts 02139

M. A. Grosenbaugh

Department of Earth and Planetary Sciences, Massachusetts Institute of Technology Cambridge, Massachusetts 02139

Microcracks and joints in rock are assumed to be rough surfaces in contact. Compressibility is found to depend on the parameter Ah/V, where h is the standard deviation of the asperity heights and A/V is the total crack area per unit volume. Theoretical results agree well with experimental studies of the deformation of an in situ joint under normal stress and the change of compressibility with confining pressure for several rocks.

Received 23 August 1978; accepted 6 March 1979; .

Citation: Walsh, J. B., and M. A. Grosenbaugh (1979), A New Model for Analyzing the Effect of Fractures on Compressibility, J. Geophys. Res., 84(B7), 3532–3536, doi:10.1029/JB084iB07p03532.

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