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Article: Modelling study on the impact of deep building foundations on the groundwater system

TitleModelling study on the impact of deep building foundations on the groundwater system
Authors
KeywordsBuilding foundation
FEFLOW
Flow and transport model
Saltwater and freshwater interface
Stochastic method
Urbanization
Issue Date2008
PublisherJohn Wiley & Sons Ltd. The Journal's web site is located at http://www3.interscience.wiley.com/cgi-bin/jhome/4125
Citation
Hydrological Processes, 2008, v. 22 n. 12, p. 1857-1865 How to Cite?
AbstractCoastal areas are usually the preferred place of habitation for human beings. Anthropogenic activities such as the construction of high-rise buildings and underground transport systems usually require extensive deep foundations and ground engineering works, which may unintentionally modify the coastal groundwater system because the construction materials of foundations are usually of low hydraulic conductivity. In this paper, the impact of these building foundations on the groundwater regime is studied using hypothetical flow and transport models. Various possible realizations of foundation distributions are generated using stochastic parameters derived from a topographical map of an actual coastal area in Hong Kong. The effective hydraulic conductivity is first calculated for different realizations and the results show that the effective hydraulic conductivity can be reduced significantly. Then a hypothetical numerical model based on FEFLOW is set up to study the change of hydraulic head, groundwater discharge, and saltwater-fresh water interface. The groundwater level and flow are modified to various degrees, depending on the foundations percentage and the distribution pattern of the buildings. When the foundations percentage is high and the building foundations are aggregated, the hydraulic head is raised significantly and the originally one-dimensional groundwater flow field becomes complicated. Seaward groundwater discharge will be reduced and some groundwater may become seepage through the ground surface. The transport model shows that, after foundations are added, overall the seawater and fresh groundwater interface moves landward, so extensive foundations may induce seawater intrusion. It is believed that the modification of the coastal groundwater system by building foundations may have engineering and environmental implications, such as submarine groundwater discharge, foundation corrosion, and slope stability. Copyright © 2007 John Wiley & Sons, Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/73067
ISSN
2015 Impact Factor: 2.768
2015 SCImago Journal Rankings: 1.419
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorDing, Gen_HK
dc.contributor.authorJiao, JJen_HK
dc.contributor.authorZhang, Den_HK
dc.date.accessioned2010-09-06T06:47:44Z-
dc.date.available2010-09-06T06:47:44Z-
dc.date.issued2008en_HK
dc.identifier.citationHydrological Processes, 2008, v. 22 n. 12, p. 1857-1865en_HK
dc.identifier.issn0885-6087en_HK
dc.identifier.urihttp://hdl.handle.net/10722/73067-
dc.description.abstractCoastal areas are usually the preferred place of habitation for human beings. Anthropogenic activities such as the construction of high-rise buildings and underground transport systems usually require extensive deep foundations and ground engineering works, which may unintentionally modify the coastal groundwater system because the construction materials of foundations are usually of low hydraulic conductivity. In this paper, the impact of these building foundations on the groundwater regime is studied using hypothetical flow and transport models. Various possible realizations of foundation distributions are generated using stochastic parameters derived from a topographical map of an actual coastal area in Hong Kong. The effective hydraulic conductivity is first calculated for different realizations and the results show that the effective hydraulic conductivity can be reduced significantly. Then a hypothetical numerical model based on FEFLOW is set up to study the change of hydraulic head, groundwater discharge, and saltwater-fresh water interface. The groundwater level and flow are modified to various degrees, depending on the foundations percentage and the distribution pattern of the buildings. When the foundations percentage is high and the building foundations are aggregated, the hydraulic head is raised significantly and the originally one-dimensional groundwater flow field becomes complicated. Seaward groundwater discharge will be reduced and some groundwater may become seepage through the ground surface. The transport model shows that, after foundations are added, overall the seawater and fresh groundwater interface moves landward, so extensive foundations may induce seawater intrusion. It is believed that the modification of the coastal groundwater system by building foundations may have engineering and environmental implications, such as submarine groundwater discharge, foundation corrosion, and slope stability. Copyright © 2007 John Wiley & Sons, Ltd.en_HK
dc.languageengen_HK
dc.publisherJohn Wiley & Sons Ltd. The Journal's web site is located at http://www3.interscience.wiley.com/cgi-bin/jhome/4125en_HK
dc.relation.ispartofHydrological Processesen_HK
dc.rightsHydrological Processes. Copyright © John Wiley & Sons Ltd.en_HK
dc.subjectBuilding foundationen_HK
dc.subjectFEFLOWen_HK
dc.subjectFlow and transport modelen_HK
dc.subjectSaltwater and freshwater interfaceen_HK
dc.subjectStochastic methoden_HK
dc.subjectUrbanizationen_HK
dc.titleModelling study on the impact of deep building foundations on the groundwater systemen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0885-6087&volume=22 &issue=12&spage=1857&epage=1865&date=2008&atitle=Modelling+study+on+the+impact+of+deep+building+foundations+on+the+groundwater+systemen_HK
dc.identifier.emailJiao, JJ:jjiao@hku.hken_HK
dc.identifier.authorityJiao, JJ=rp00712en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/hyp.6768en_HK
dc.identifier.scopuseid_2-s2.0-47249157677en_HK
dc.identifier.hkuros144020en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-47249157677&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume22en_HK
dc.identifier.issue12en_HK
dc.identifier.spage1857en_HK
dc.identifier.epage1865en_HK
dc.identifier.isiWOS:000256958700012-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridDing, G=24467315600en_HK
dc.identifier.scopusauthoridJiao, JJ=7102382963en_HK
dc.identifier.scopusauthoridZhang, D=7405360672en_HK
dc.identifier.citeulike1559846-

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