Numerical evaluation of anisotropic fluid flow in sheared rock fractures

K. Nemoto, N. Watanabe, H. Oka, N. Hirano, N. Tsuchiya

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

1 Citation (Scopus)

Abstract

Anisotropic fluid flow in single sheared fractures in granite is investigated numerically under normal stresses up to 90 MPa that are the extended stress conditions of the previous studies. Aperture distributions of the sheared fractures under the normal stresses generated numerically on the basis of direct measurements of contact area suggest anisotropy of connectivity in fracture aperture even under the normal stresses. Numerical simulation of fluid flow using the generated aperture distribution shows not only anisotropy in fracture permeability and that in preferential flow paths, but also the normal stress dependency in the anisotropy of fracture permeability. An investigation on contact ratio reveals the anisotropy and the normal stress dependency in aperture connectivity, which supports the results of flow simulation. These results suggest importance of the flow anisotropy in discrete fractures for investigating three-dimensional flow properties in fractured rocks at a greater depth.

Original languageEnglish
Title of host publicationWATER DYANMICS
Subtitle of host publication4th International Workshop on Water Dynamics
Pages36-44
Number of pages9
DOIs
Publication statusPublished - 2007
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

  • Anisotropic flow
  • Aperture distribution
  • Fluid flow
  • Rock fracture

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Numerical evaluation of anisotropic fluid flow in sheared rock fractures'. Together they form a unique fingerprint.

Cite this