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Article: Mechanism of drying induced rebound movements in a soil slope in Sai Kung, Hong Kong
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TitleMechanism of drying induced rebound movements in a soil slope in Sai Kung, Hong Kong
 
AuthorsZhou, YD1
Tham, LG1
Kwong, AKL1
Tang, XW1
 
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
 
CitationEngineering Geology, 2010, v. 116 n. 1-2, p. 86-94 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.enggeo.2010.07.010
 
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.
 
ISSN0013-7952
2013 Impact Factor: 1.757
2013 SCImago Journal Rankings: 1.272
 
DOIhttp://dx.doi.org/10.1016/j.enggeo.2010.07.010
 
ISI Accession Number IDWOS:000284185400008
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.

 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorZhou, YD
 
dc.contributor.authorTham, LG
 
dc.contributor.authorKwong, AKL
 
dc.contributor.authorTang, XW
 
dc.date.accessioned2012-06-26T06:05:32Z
 
dc.date.available2012-06-26T06:05:32Z
 
dc.date.issued2010
 
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.
 
dc.description.natureLink_to_subscribed_fulltext
 
dc.identifier.citationEngineering Geology, 2010, v. 116 n. 1-2, p. 86-94 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.enggeo.2010.07.010
 
dc.identifier.citeulike7891687
 
dc.identifier.doihttp://dx.doi.org/10.1016/j.enggeo.2010.07.010
 
dc.identifier.epage94
 
dc.identifier.hkuros212168
 
dc.identifier.hkuros212174
 
dc.identifier.isiWOS:000284185400008
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.

 
dc.identifier.issn0013-7952
2013 Impact Factor: 1.757
2013 SCImago Journal Rankings: 1.272
 
dc.identifier.issue1-2
 
dc.identifier.scopuseid_2-s2.0-77957764097
 
dc.identifier.spage86
 
dc.identifier.urihttp://hdl.handle.net/10722/150534
 
dc.identifier.volume116
 
dc.languageeng
 
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/enggeo
 
dc.publisher.placeNetherlands
 
dc.relation.ispartofEngineering Geology
 
dc.relation.referencesReferences in Scopus
 
dc.subjectDry season
 
dc.subjectGroundwater
 
dc.subjectRebound movement
 
dc.subjectSoil slope
 
dc.subjectSuction
 
dc.titleMechanism of drying induced rebound movements in a soil slope in Sai Kung, Hong Kong
 
dc.typeArticle
 
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Author Affiliations
  1. The University of Hong Kong