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dc.contributor.author
Guarracino, Luis
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dc.contributor.author
Quintana, José Fernando Adolfo
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dc.date.available
2024-08-06T10:11:07Z
dc.date.issued
2009-01
dc.identifier.citation
Guarracino, Luis; Quintana, José Fernando Adolfo; A constitutive model for water flow in unsaturated fractured rocks; John Wiley & Sons Ltd; Hydrological Processes; 23; 5; 1-2009; 697-701
dc.identifier.issn
0885-6087
dc.identifier.uri
http://hdl.handle.net/11336/241787
dc.description.abstract
A conceptual model for describing effective saturation in fractured hard rock is presented. The fracture network and the rock matrix are considered as an equivalent continuum medium where each fracture is conceptualized as a porous medium of granular structure and the rock matrix is assumed to be impermeable. The proposed model is based on the representation of a rough-walled fracture by an equivalent porous medium, which is described using classical constitutive models. A simple closed-form equation for the effective saturation is obtained when the van Genuchten model is used to describe saturation inside fractures and fractal laws are assumed for both aperture and number of fractures. The relative hydraulic conductivity for the fractured rock is predicted from a simple relation derived by Liu and Bodvarsson. The proposed constitutive model contains three independent parameters, which may be obtained by fitting the proposed effective saturation curve to experimental data. Two of the model parameters have physical meaning and can be identified with the reciprocal of the air entry pressure values in the fractures of maximum and maximum apertures. Effective saturation and relative hydraulic conductivity curves match fairly well the simulated constitutive relations obtained by Liu and Bodvarsson.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
John Wiley & Sons Ltd
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
CONSTITUTIVE MODEL
dc.subject
UNSATURATED FLOW
dc.subject
FRACTURED ROCKS
dc.subject
NUMERICAL MODELING
dc.subject.classification
Geociencias multidisciplinaria
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
A constitutive model for water flow in unsaturated fractured rocks
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-08-05T13:40:57Z
dc.journal.volume
23
dc.journal.number
5
dc.journal.pagination
697-701
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Londres
dc.description.fil
Fil: Guarracino, Luis. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
dc.description.fil
Fil: Quintana, José Fernando Adolfo. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Hydrological Processes
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/hyp.7169
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/hyp.7169
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