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Article: Estimating the excavation disturbed zone in the permanent shiplock slopes of the Three Gorges Project, China

TitleEstimating the excavation disturbed zone in the permanent shiplock slopes of the Three Gorges Project, China
Authors
KeywordsCut slope
Excavation
Excavation disturbed zone
Rock mechanics
Shiplock
Three Gorges
Yangtze River
Issue Date2002
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/ijrmms
Citation
International Journal Of Rock Mechanics And Mining Sciences, 2002, v. 39 n. 2, p. 165-184 How to Cite?
AbstractThe stability and deformation of the permanent shiplock slopes are among the key issues in the design and construction of the Three Gorges Project. The permanent shiplock slopes, formed by deeply and steeply cutting into weathered and fresh granites, are 1607 m in length and 50-170 m in height. The disturbed zone in the permanent cut slopes induced by excavation is therefore one of the most important aspects in slope stability and deformation evaluation. A comprehensive investigation including non-linear finite element analysis, in-situ testing, instrumentation and monitoring, back analysis and rock mass quality rating has been carried out for the identification and evaluation of the excavation disturbed zone in the permanent cut slopes. The results of the investigation confirmed the existence of such an excavation disturbed zone in the permanent cut slopes. This zone is characterized by a considerable weakening in the mechanical properties of the rock mass. From the cut surface to the deeper region of the permanent cut slopes, the excavation disturbed zone can be further divided into a damaged zone, an affected zone and a slightly affected zone according to the extent of weakening in the rock mass. The damaged zone and the affected zone have thicknesses of 5-10 m and 10-20 m, respectively. The exact pattern of the excavation disturbed zone is variable in different parts of the permanent cut slopes and are generally similar to that of the plastic zones estimated by using the non-linear finite element analysis. The present investigation has provided both factual data and insights for the stability and deformation evaluation of the permanent shiplock slopes. The approach and methodology developed in the paper can be used to assess similar excavation disturbed zones in other large cut slopes. © 2002 Elsevier Science Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/70772
ISSN
2015 Impact Factor: 2.01
2015 SCImago Journal Rankings: 2.134
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorSheng, Qen_HK
dc.contributor.authorYue, ZQen_HK
dc.contributor.authorLee, CFen_HK
dc.contributor.authorTham, LGen_HK
dc.contributor.authorZhou, Hen_HK
dc.date.accessioned2010-09-06T06:25:59Z-
dc.date.available2010-09-06T06:25:59Z-
dc.date.issued2002en_HK
dc.identifier.citationInternational Journal Of Rock Mechanics And Mining Sciences, 2002, v. 39 n. 2, p. 165-184en_HK
dc.identifier.issn1365-1609en_HK
dc.identifier.urihttp://hdl.handle.net/10722/70772-
dc.description.abstractThe stability and deformation of the permanent shiplock slopes are among the key issues in the design and construction of the Three Gorges Project. The permanent shiplock slopes, formed by deeply and steeply cutting into weathered and fresh granites, are 1607 m in length and 50-170 m in height. The disturbed zone in the permanent cut slopes induced by excavation is therefore one of the most important aspects in slope stability and deformation evaluation. A comprehensive investigation including non-linear finite element analysis, in-situ testing, instrumentation and monitoring, back analysis and rock mass quality rating has been carried out for the identification and evaluation of the excavation disturbed zone in the permanent cut slopes. The results of the investigation confirmed the existence of such an excavation disturbed zone in the permanent cut slopes. This zone is characterized by a considerable weakening in the mechanical properties of the rock mass. From the cut surface to the deeper region of the permanent cut slopes, the excavation disturbed zone can be further divided into a damaged zone, an affected zone and a slightly affected zone according to the extent of weakening in the rock mass. The damaged zone and the affected zone have thicknesses of 5-10 m and 10-20 m, respectively. The exact pattern of the excavation disturbed zone is variable in different parts of the permanent cut slopes and are generally similar to that of the plastic zones estimated by using the non-linear finite element analysis. The present investigation has provided both factual data and insights for the stability and deformation evaluation of the permanent shiplock slopes. The approach and methodology developed in the paper can be used to assess similar excavation disturbed zones in other large cut slopes. © 2002 Elsevier Science Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/ijrmmsen_HK
dc.relation.ispartofInternational Journal of Rock Mechanics and Mining Sciencesen_HK
dc.subjectCut slopeen_HK
dc.subjectExcavationen_HK
dc.subjectExcavation disturbed zoneen_HK
dc.subjectRock mechanicsen_HK
dc.subjectShiplocken_HK
dc.subjectThree Gorgesen_HK
dc.subjectYangtze Riveren_HK
dc.titleEstimating the excavation disturbed zone in the permanent shiplock slopes of the Three Gorges Project, Chinaen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1365-1609&volume=39&issue=2&spage=165&epage=184&date=2002&atitle=Estimating+the+excavation+disturbed+zone+in+the+permanent+shiplock+slopes+of+the+Three+Gorges+Project,+Chinaen_HK
dc.identifier.emailYue, ZQ: yueqzq@hku.hken_HK
dc.identifier.emailLee, CF: leecf@hkucc.hku.hken_HK
dc.identifier.emailTham, LG: hrectlg@hku.hken_HK
dc.identifier.authorityYue, ZQ=rp00209en_HK
dc.identifier.authorityLee, CF=rp00139en_HK
dc.identifier.authorityTham, LG=rp00176en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S1365-1609(02)00015-1en_HK
dc.identifier.scopuseid_2-s2.0-0036478712en_HK
dc.identifier.hkuros67573en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0036478712&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume39en_HK
dc.identifier.issue2en_HK
dc.identifier.spage165en_HK
dc.identifier.epage184en_HK
dc.identifier.isiWOS:000176803500005-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridSheng, Q=7004531388en_HK
dc.identifier.scopusauthoridYue, ZQ=7102782735en_HK
dc.identifier.scopusauthoridLee, CF=8068602600en_HK
dc.identifier.scopusauthoridTham, LG=7006213628en_HK
dc.identifier.scopusauthoridZhou, H=7404742493en_HK

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