HYDRAULIC CONDUCTIVITY OF CLOSED ROCK FRACTURE: AN EXPERIMENTAL AND ANALYTICAL STUDY.

Research output: Contribution to conferencePaper

17 Scopus citations

Abstract

The paper reports on a series of conductivity experiments under straight flow conditions performed on an artificial granite fracture closed by various compression loads. Among the results reported is that with a constant load applied on the sample, the relationship between discharge and head gradient was linear only at low pressure gradients; a conductivity coefficient could be computed by linear regression. Regression analysis carried out on the calculated conductivity coefficients and the joint closure data shows that the parallel-plates cubic law is applicable to closed joints provided an initial aperture is introduced which is computed from the conductivity-closure data. The nonlinearity observed between the discharge and the head gradient was attributed to the deformation of the joint caused by a change of the effective stress across the fracture.

Original languageEnglish (US)
Pages168-173
Number of pages6
StatePublished - Jan 1 1980
EventCan Rock Mech Symp Proc 13th, Underground Rock Eng, The H. R. Rice Mem Symp - Univ of Toronto, Ont
Duration: May 28 1980May 29 1980

Other

OtherCan Rock Mech Symp Proc 13th, Underground Rock Eng, The H. R. Rice Mem Symp
CityUniv of Toronto, Ont
Period5/28/805/29/80

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