Analysis of shear dilation and permeability of a hydraulic fracture in granite

K. Matsuki, K. Sakaguchi, Y. Inoue

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

Two-dimensional height distributions were measured along matched paths for the upper and lower surfaces of a hydraulic fracture created in the laboratory for granite. An analysis on dilatant behaviors and the permeability of the fracture during shear under small normal stress and during closure after being sheared was performed by using the height distributions of the surfaces and by solving Reynolds equation with a finite difference method. The results showed that remarkable shear dilation occurring under small normal stress results from the decrease in the degree of correlation between the two fracture surfaces and is governed by components with a few largest wavelengths, and that the hydraulic aperture normalized by the mean aperture of a sheared fracture is much greater than that of a fracture without being sheared when they are closed to have the same mean aperture normalized by the initial standard deviation of the aperture.

Original languageEnglish
Title of host publication20th Century Lessons, 21st Century Challenges.
EditorsG. Vouille, P. Berest
Pages765-768
Number of pages4
Publication statusPublished - 1999 Dec 1
Event40th Interscience Conference on Antimicrobial Agents and Chemotherapy -
Duration: 1999 Sep 171999 Sep 20

Publication series

Name20th Century Lessons, 21st Century Challenges.

Other

Other40th Interscience Conference on Antimicrobial Agents and Chemotherapy
Period99/9/1799/9/20

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Environmental Science(all)

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  • Cite this

    Matsuki, K., Sakaguchi, K., & Inoue, Y. (1999). Analysis of shear dilation and permeability of a hydraulic fracture in granite. In G. Vouille, & P. Berest (Eds.), 20th Century Lessons, 21st Century Challenges. (pp. 765-768). (20th Century Lessons, 21st Century Challenges.).