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Article: Mechanism of drying induced rebound movements in a soil slope in Sai Kung, Hong Kong

TitleMechanism of drying induced rebound movements in a soil slope in Sai Kung, Hong Kong
Authors
KeywordsDry season
Groundwater
Rebound movement
Soil slope
Suction
Issue Date2010
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/enggeo
Citation
Engineering Geology, 2010, v. 116 n. 1-2, p. 86-94 How to Cite?
AbstractThis paper reports on a study conducted during 1992-1995 on the progressive movement of a slope in Sai Kung, Hong Kong. In spite of the fact that significant downslope movement was triggered during the rainy seasons, the field data show that remarkable rebound in the uphill direction was mobilized during dry season when the groundwater level dropped. This paper focuses on such rebound deformation which is due to the drying of the soils. To investigate the mechanism of the rebound deformation, a two-dimensional finite element model of the slope was established and a series of hydraulic and mechanical analyses were conducted. It is found that the volumetric contractive behaviour caused by the increase in suction within the unsaturated soil zones and the reduction in pore pressure in the submerged soils due to the lowering of groundwater level induced the rebound deformation. Moreover, the water retention properties of the unsaturated soil zones can also strongly influence such deformation. © 2010 Elsevier B.V.
Persistent Identifierhttp://hdl.handle.net/10722/150534
ISSN
2015 Impact Factor: 2.196
2015 SCImago Journal Rankings: 1.810
ISI Accession Number ID
Funding AgencyGrant Number
University of Hong Kong7138/07E
Funding Information:

The authors acknowledge the support by Grant No. 7138/07E of the University of Hong Kong.

References

 

DC FieldValueLanguage
dc.contributor.authorZhou, YDen_HK
dc.contributor.authorTham, LGen_HK
dc.contributor.authorKwong, AKLen_HK
dc.contributor.authorTang, XWen_HK
dc.date.accessioned2012-06-26T06:05:32Z-
dc.date.available2012-06-26T06:05:32Z-
dc.date.issued2010en_HK
dc.identifier.citationEngineering Geology, 2010, v. 116 n. 1-2, p. 86-94en_HK
dc.identifier.issn0013-7952en_HK
dc.identifier.urihttp://hdl.handle.net/10722/150534-
dc.description.abstractThis paper reports on a study conducted during 1992-1995 on the progressive movement of a slope in Sai Kung, Hong Kong. In spite of the fact that significant downslope movement was triggered during the rainy seasons, the field data show that remarkable rebound in the uphill direction was mobilized during dry season when the groundwater level dropped. This paper focuses on such rebound deformation which is due to the drying of the soils. To investigate the mechanism of the rebound deformation, a two-dimensional finite element model of the slope was established and a series of hydraulic and mechanical analyses were conducted. It is found that the volumetric contractive behaviour caused by the increase in suction within the unsaturated soil zones and the reduction in pore pressure in the submerged soils due to the lowering of groundwater level induced the rebound deformation. Moreover, the water retention properties of the unsaturated soil zones can also strongly influence such deformation. © 2010 Elsevier B.V.en_HK
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/enggeoen_HK
dc.relation.ispartofEngineering Geologyen_HK
dc.subjectDry seasonen_HK
dc.subjectGroundwateren_HK
dc.subjectRebound movementen_HK
dc.subjectSoil slopeen_HK
dc.subjectSuctionen_HK
dc.titleMechanism of drying induced rebound movements in a soil slope in Sai Kung, Hong Kongen_HK
dc.typeArticleen_HK
dc.identifier.emailZhou, YD: zhouyuande@gmail.comen_HK
dc.identifier.emailTham, LG: hrectlg@hku.hken_HK
dc.identifier.emailKwong, AKL: kwongakl@hkucc.hku.hken_HK
dc.identifier.authorityZhou, YD=rp00215en_HK
dc.identifier.authorityTham, LG=rp00176en_HK
dc.identifier.authorityKwong, AKL=rp00129en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.enggeo.2010.07.010en_HK
dc.identifier.scopuseid_2-s2.0-77957764097en_HK
dc.identifier.hkuros212168-
dc.identifier.hkuros212174-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77957764097&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume116en_HK
dc.identifier.issue1-2en_HK
dc.identifier.spage86en_HK
dc.identifier.epage94en_HK
dc.identifier.isiWOS:000284185400008-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridZhou, YD=7405363896en_HK
dc.identifier.scopusauthoridTham, LG=7006213628en_HK
dc.identifier.scopusauthoridKwong, AKL=24385436300en_HK
dc.identifier.scopusauthoridTang, XW=7404101141en_HK
dc.identifier.citeulike7891687-

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