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Article: A dual fracture model to simulate large-scale flow through fractured rocks

TitleA dual fracture model to simulate large-scale flow through fractured rocks
Authors
KeywordsCase studies
Dominant fracture
Dual fracture model
Fractured rock matrix
Rock-filled dam
Seepage flow
Issue Date2002
PublisherNRC Research Press. The Journal's web site is located at http://pubs.nrc-cnrc.gc.ca/cgi-bin/rp/rp2_desc_e?cgj
Citation
Canadian Geotechnical Journal, 2002, v. 39 n. 6, p. 1302-1312 How to Cite?
AbstractDiscrete fracture network models can be used to study groundwater flow in fractured rock masses. However, one may find that it is not easy to apply such models to practical projects as it is difficult to investigate every fracture and measure its hydraulic parameters. To overcome such difficulties, a dual fracture model is proposed. Taking into account the hydraulic characteristics of the various elements of the fracture system, a hydrogeological medium is assumed to consist of two components: the dominant fracture network and the fractured rock matrix. As the dominant fracture network consists of large fractures and faults, it controls the groundwater flow in rock masses. Depending on the permeabilities of the in-fill materials, these fractures and faults may serve as channels or barriers of the flow. The fractured rock matrix, which includes rock blocks and numerous small fractures, plays a secondary role in groundwater flow in such medium. Although the small fractures and rock blocks possess low permeability, their numbers and their total porosity are relatively large. Therefore, they provide large volume for groundwater storage. In this paper, the application of the proposed model to simulate the groundwater flow for a hydropower station before and after reservoir storage is reported. The implications of the results on the design of the station are also highlighted.
Persistent Identifierhttp://hdl.handle.net/10722/42367
ISSN
2015 Impact Factor: 1.877
2015 SCImago Journal Rankings: 2.093
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorWang, EZen_HK
dc.contributor.authorYue, ZQen_HK
dc.contributor.authorTham, LGen_HK
dc.contributor.authorTsui, Yen_HK
dc.contributor.authorWang, HTen_HK
dc.date.accessioned2007-01-29T08:47:55Z-
dc.date.available2007-01-29T08:47:55Z-
dc.date.issued2002en_HK
dc.identifier.citationCanadian Geotechnical Journal, 2002, v. 39 n. 6, p. 1302-1312en_HK
dc.identifier.issn0008-3674en_HK
dc.identifier.urihttp://hdl.handle.net/10722/42367-
dc.description.abstractDiscrete fracture network models can be used to study groundwater flow in fractured rock masses. However, one may find that it is not easy to apply such models to practical projects as it is difficult to investigate every fracture and measure its hydraulic parameters. To overcome such difficulties, a dual fracture model is proposed. Taking into account the hydraulic characteristics of the various elements of the fracture system, a hydrogeological medium is assumed to consist of two components: the dominant fracture network and the fractured rock matrix. As the dominant fracture network consists of large fractures and faults, it controls the groundwater flow in rock masses. Depending on the permeabilities of the in-fill materials, these fractures and faults may serve as channels or barriers of the flow. The fractured rock matrix, which includes rock blocks and numerous small fractures, plays a secondary role in groundwater flow in such medium. Although the small fractures and rock blocks possess low permeability, their numbers and their total porosity are relatively large. Therefore, they provide large volume for groundwater storage. In this paper, the application of the proposed model to simulate the groundwater flow for a hydropower station before and after reservoir storage is reported. The implications of the results on the design of the station are also highlighted.en_HK
dc.format.extent1906390 bytes-
dc.format.extent26112 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
dc.languageengen_HK
dc.publisherNRC Research Press. The Journal's web site is located at http://pubs.nrc-cnrc.gc.ca/cgi-bin/rp/rp2_desc_e?cgjen_HK
dc.relation.ispartofCanadian Geotechnical Journalen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsCanadian Geotechnical Journal. Copyright © N R C Research Press.en_HK
dc.subjectCase studiesen_HK
dc.subjectDominant fractureen_HK
dc.subjectDual fracture modelen_HK
dc.subjectFractured rock matrixen_HK
dc.subjectRock-filled damen_HK
dc.subjectSeepage flowen_HK
dc.titleA dual fracture model to simulate large-scale flow through fractured rocksen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0008-3674&volume=39&issue=6&spage=1302&epage=1312&date=2002&atitle=A+dual+fracture+model+to+simulate+large-scale+flow+through+fractured+rocksen_HK
dc.identifier.emailYue, ZQ:yueqzq@hkucc.hku.hken_HK
dc.identifier.emailTham, LG:hrectlg@hkucc.hku.hken_HK
dc.identifier.authorityYue, ZQ=rp00209en_HK
dc.identifier.authorityTham, LG=rp00176en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1139/t02-068en_HK
dc.identifier.scopuseid_2-s2.0-0037000219en_HK
dc.identifier.hkuros76042-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0037000219&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume39en_HK
dc.identifier.issue6en_HK
dc.identifier.spage1302en_HK
dc.identifier.epage1312en_HK
dc.identifier.isiWOS:000179439800007-
dc.publisher.placeCanadaen_HK
dc.identifier.scopusauthoridWang, EZ=7403414112en_HK
dc.identifier.scopusauthoridYue, ZQ=7102782735en_HK
dc.identifier.scopusauthoridTham, LG=7006213628en_HK
dc.identifier.scopusauthoridTsui, Y=7006760586en_HK
dc.identifier.scopusauthoridWang, HT=7501746640en_HK

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