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Fundamentals of the hydro-mechanical behaviour of rock fractures: roughness characterization and experimental aspects
KTH, Superseded Departments, Land and Water Resources Engineering.
2004 (English)In: International Journal of Rock Mechanics And Mining Sciences, ISSN 1365-1609, Vol. 41, no 3, 383-383 p.Article in journal (Refereed) Published
Abstract [en]

The coupled hydro-mechanical behaviour of rock fractures plays an important role in design, performance and safety assessments of rock engineering projects. However, due to the complexity in the mathematical representation of the fracture surface geometry and its effects on the stress-flow behaviour of the fractures, and the limitations in the test conditions in laboratories, significant lack of knowledge still exists in testing and modelling approaches regarding rock fractures. Based on a general review of the roughness characterization and shear-flow testing of rock fractures, this paper presents the definition of the stationarity threshold of roughness, and a combined experimental-numerical approach for simulating rock fracture testing conditions for more general fluid flow behaviour of the rock fractures. The conclusions are that fracture roughness characterization must be conducted and represented in three-dimensions and the more general fluid flow behaviour cannot be observed with conventional parallel shear-flow tests or compressionradial flow tests. Numerical simulations are needed to reveal more general behaviour of stress-flow processes of rock fractures with boundary and loading conditions that are difficult or impractical in laboratory tests.

Place, publisher, year, edition, pages
2004. Vol. 41, no 3, 383-383 p.
Keyword [en]
rock fractures, roughness characterization, stationarity threshold, fracture testing, shear-flow coupling, numerical modelling
National Category
Mineral and Mine Engineering
URN: urn:nbn:se:kth:diva-23453DOI: 10.1016/j.ijrmms.2004.03.035ISI: 000221685000027ScopusID: 2-s2.0-3042701045OAI: diva2:342151
QC 20100525 QC 20111028Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2011-10-28Bibliographically approved

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Jing, Lanru
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