Evaluation of aperture structure and fluid flow in shear fracture of granite using high-resolution numerical modeling technique

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

1 Citation (Scopus)

Abstract

Aperture structure and fluid flow of shear fractures with different shear displacement (1 and 5 mm), which were created in granite under different normal stress (20 and 60 MPa) for a shear plane, were evaluated for 10-100 MPa confining pressure, using high-resolution numerical modeling technique. Aperture structure was heterogeneous and fluid flow occurred in preferential flow paths for all the shear fractures under the confining pressure. For shear fractures created under 20 MPa normal stress, aperture structure was characterized by contact points clustered in a few specific regions, and which caused clear channels where fluid flow occurred preferentially, despite of different shear displacement. On the other hand, for a shear fracture with 1 mm shear displacement, which was created under 60 MPa normal stress, aperture structure was characterized by no clear channel although large clustered contact points were observed, and which caused tortuous flow paths. Additionally, for a shear fracture with 5 mm shear displacement, which was also created under 60 MPa normal stress, aperture structure was characterized by smaller clustered contact points, and fluid flow occurred less tortuous flow paths.

Original languageEnglish
Title of host publicationWATER DYANMICS
Subtitle of host publication4th International Workshop on Water Dynamics
Pages66-70
Number of pages5
DOIs
Publication statusPublished - 2007 May 11
Event4th International Workshop on Water Dynamics - Sendai, Japan
Duration: 2006 Nov 72006 Nov 8

Publication series

NameAIP Conference Proceedings
Volume898
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other4th International Workshop on Water Dynamics
CountryJapan
CitySendai
Period06/11/706/11/8

Keywords

  • Aperture structure
  • Channeling flow
  • Fluid flow
  • Granite
  • Numerical modeling
  • Shear fracture

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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