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Article: Spatial distribution of inter-layer shear zones at Gaobazhou dam site, Qingjiang River, China

TitleSpatial distribution of inter-layer shear zones at Gaobazhou dam site, Qingjiang River, China
Authors
KeywordsInter-layer shear zone
Rescaled range (R/S) analysis
SCT-R/S model
Issue Date2000
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/enggeo
Citation
Engineering Geology, 2000, v. 55 n. 4, p. 227-239 How to Cite?
AbstractThe spatial distribution of inter-layer shear zones is studied, based on the fully mapped inter-layer shear zones at the Gaobazhou dam site on the Qingjiang River in Hubei province, China. The field observations revealed that two types of inter-layer shear zone, under-developed and well-developed, are distributed differently. The former are associated with the incompetent rock layers, and the latter are controlled by the inter-bed folds and lithological properties of the strata. To represent their lithological properties geomechanically, data on strength by the Schmidt hammer test and thickness of each field-identified rock layer were collected to form strength sequences and thickness sequences. The adjacent rock layers of similar strength are then grouped, and two grouped sequences are combined into a single sequence, whose individual term is the strength weighted by the exponential function value of the centralized thickness (SCT). The rescaled range (R/S) analysis results of SCT (SCT-R/S), taking into account the presence of inter-bed folds, are in good agreement with R/S analysis results of the spacing sequence of the well-developed inter-layer shear zones. Thus the SCT-R/S model has the potential to predict their spatial distributions. (C) 2000 Elsevier Science B.V. All rights reserved. | The spatial distribution of inter-layer shear zones is studied, based on the fully mapped inter-layer shear zones at the Gaobazhou dam site on the Qingjiang River in Hubei province, China. The field observations revealed that two types of inter-layer shear zone, under-developed and well-developed, are distributed differently. The former are associated with the incompetent rock layers, and the latter are controlled by the inter-bed folds and lithological properties of the strata. To represent their lithological properties geomechanically, data on strength by the Schmidt hammer test and thickness of each field-identified rock layer were collected to form strength sequences and thickness sequences. The adjacent rock layers of similar strength are then grouped, and two grouped sequences are combined into a single sequence, whose individual term is the strength weighted by the exponential function value of the centralized thickness (SCT). The rescaled range (R/S) analysis results of SCT (SCT-R/S), taking into account the presence of inter-bed folds, are in good agreement with R/S analysis results of the spacing sequence of the well-developed inter-layer shear zones. Thus the SCT-R/S model has the potential to predict their spatial distributions.
Persistent Identifierhttp://hdl.handle.net/10722/70606
ISSN
2015 Impact Factor: 2.196
2015 SCImago Journal Rankings: 1.810
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorXiao, YJen_HK
dc.contributor.authorLee, CFen_HK
dc.contributor.authorWang, SXen_HK
dc.date.accessioned2010-09-06T06:24:29Z-
dc.date.available2010-09-06T06:24:29Z-
dc.date.issued2000en_HK
dc.identifier.citationEngineering Geology, 2000, v. 55 n. 4, p. 227-239en_HK
dc.identifier.issn0013-7952en_HK
dc.identifier.urihttp://hdl.handle.net/10722/70606-
dc.description.abstractThe spatial distribution of inter-layer shear zones is studied, based on the fully mapped inter-layer shear zones at the Gaobazhou dam site on the Qingjiang River in Hubei province, China. The field observations revealed that two types of inter-layer shear zone, under-developed and well-developed, are distributed differently. The former are associated with the incompetent rock layers, and the latter are controlled by the inter-bed folds and lithological properties of the strata. To represent their lithological properties geomechanically, data on strength by the Schmidt hammer test and thickness of each field-identified rock layer were collected to form strength sequences and thickness sequences. The adjacent rock layers of similar strength are then grouped, and two grouped sequences are combined into a single sequence, whose individual term is the strength weighted by the exponential function value of the centralized thickness (SCT). The rescaled range (R/S) analysis results of SCT (SCT-R/S), taking into account the presence of inter-bed folds, are in good agreement with R/S analysis results of the spacing sequence of the well-developed inter-layer shear zones. Thus the SCT-R/S model has the potential to predict their spatial distributions. (C) 2000 Elsevier Science B.V. All rights reserved. | The spatial distribution of inter-layer shear zones is studied, based on the fully mapped inter-layer shear zones at the Gaobazhou dam site on the Qingjiang River in Hubei province, China. The field observations revealed that two types of inter-layer shear zone, under-developed and well-developed, are distributed differently. The former are associated with the incompetent rock layers, and the latter are controlled by the inter-bed folds and lithological properties of the strata. To represent their lithological properties geomechanically, data on strength by the Schmidt hammer test and thickness of each field-identified rock layer were collected to form strength sequences and thickness sequences. The adjacent rock layers of similar strength are then grouped, and two grouped sequences are combined into a single sequence, whose individual term is the strength weighted by the exponential function value of the centralized thickness (SCT). The rescaled range (R/S) analysis results of SCT (SCT-R/S), taking into account the presence of inter-bed folds, are in good agreement with R/S analysis results of the spacing sequence of the well-developed inter-layer shear zones. Thus the SCT-R/S model has the potential to predict their spatial distributions.en_HK
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/enggeoen_HK
dc.relation.ispartofEngineering Geologyen_HK
dc.rightsEngineering Geology. Copyright © Elsevier BV.en_HK
dc.subjectInter-layer shear zoneen_HK
dc.subjectRescaled range (R/S) analysisen_HK
dc.subjectSCT-R/S modelen_HK
dc.titleSpatial distribution of inter-layer shear zones at Gaobazhou dam site, Qingjiang River, Chinaen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0013-7952&volume=55&spage=227 &epage= 239&date=2000&atitle=Spatial+Distribution+of+Inter-layer+Shear+Zones+at+Gaobazhou+Dam+Site,+Qingjiang+River,+Chinaen_HK
dc.identifier.emailLee, CF: leecf@hkucc.hku.hken_HK
dc.identifier.authorityLee, CF=rp00139en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S0013-7952(99)00051-4en_HK
dc.identifier.scopuseid_2-s2.0-0034162204en_HK
dc.identifier.hkuros49500en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0034162204&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume55en_HK
dc.identifier.issue4en_HK
dc.identifier.spage227en_HK
dc.identifier.epage239en_HK
dc.identifier.isiWOS:000086323600002-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridXiao, YJ=36793677100en_HK
dc.identifier.scopusauthoridLee, CF=8068602600en_HK
dc.identifier.scopusauthoridWang, SX=8213167100en_HK

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