Experimental study of the transport properties of rough self-affine fractures - Archive ouverte HAL Access content directly
Journal Articles Journal of Contaminant Hydrology Year : 2000

Experimental study of the transport properties of rough self-affine fractures

Abstract

An experimental study of the transport properties of fluid-saturated joints composed of two complementary rough fracture surfaces, translated with respect to each other and brought in contact, is reported. Quantitative roughness measurements on different fractured granite samples show that the surfaces have a self-affine geometry from which the dependence of the mean aperture on the relative displacement of fracture surfaces kept in contact can be predicted. Variations of the hydraulic and electrical conductances of the joint are measured as functions of its mean aperture. A simple parallel plane model accounts for the global trend of the measurements, but significant deviations are observed when a relative lateral displacement of the surfaces is introduced. A theoretical analysis of their origin shows that they are due both to the randomness of the aperture field and to a nonzero local slope of the surface near the injection hole; the corresponding conductivity fluctuation amplitudes have power law and linear variations with the lateral displacement, and are enhanced by the radial injection geometry.
Fichier principal
Vignette du fichier
plouraboue_5496.pdf (1.32 Mo) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-03604955 , version 1 (10-03-2022)

Identifiers

Cite

Franck Plouraboué, Pascal Kurowski, Jean-Marc Boffa, Jean-Pierre Hulin, Stéphane Roux. Experimental study of the transport properties of rough self-affine fractures. Journal of Contaminant Hydrology, 2000, 46 (3-4), pp.295-318. ⟨10.1016/S0169-7722(00)00134-0⟩. ⟨hal-03604955⟩
1 View
7 Download

Altmetric

Share

Gmail Facebook X LinkedIn More