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Type: Journal article
Title: Seepage properties of a single rock fracture subjected to triaxial stresses
Author: Liu, C.
Chen, C.
Jaksa, M.
Citation: Progress in Natural Science, 2007; 17(12):1482-1486
Publisher: Taylor & Francis Ltd
Issue Date: 2007
ISSN: 1002-0071
Statement of
Liu Caihua, Chen Congxin, M B Jaksa
Abstract: Coupled properties of seepage and stress fields of rock fractures greatly influence the safety of geotechnical engineering work. Based on the closing deformation principle of a single rock fracture, equations describing relationships of aperture and triaxial stresses are developed, and coupled models of seepage and triaxial stresses are proposed. Seepage tests are conducted under triaxial stress conditions by adopting hard granite specimens with an artificial fracture. The results show that the normal stress, lateral stress and seepage pressure significantly affect the flow behavior of rock fractures, and that hydraulic conductivity decreases with increasing normal stress, but increases with rising lateral stress or seepage pressure. In addition, an exponential function provides a good representation of the seepage characteristics of a single rock fracture subjected to triaxial stresses.
Keywords: rock fractures; seepage; triaxial stresses; coupling model; hydraulic conductivity
Provenance: Published by Elsevier since 2008
RMID: 0020074347
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Appears in Collections:Civil and Environmental Engineering publications

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