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Article: The influence of low-permeability cap on capillary pressure during pumping in unconfined aquifer

TitleThe influence of low-permeability cap on capillary pressure during pumping in unconfined aquifer
Authors
Issue Date2013
PublisherElsevier.
Citation
Journal of Hydrodynamics, Ser. B, 2013, v. 25, p. 867-870 How to Cite?
AbstractThe pumping test in an unconfined aquifer with and without a low-permeability soil was studied experimentally to reveal the influence of the negative air pressure (NP) caused by the upper layer on the water content (w), the water pressure (Pw), as well as on the capillary pressure (Pc). The study demonstrates that the NP generated in the vadose zone during pumping in the capper aquifer has a significant influence on w, Pw and Pc. The Pc obtained from the capped aquifer is smaller than that without the upper layer. After the NP reaches a peak, the influence of the NP on Pc is gradually declined as the air inflows through the upper layer which makes the NP gradually return to zero. When the air pressure returns to the atmospheric pressure, Pc in the vadose zone is only correlated with Pw, the same as the case with no upper layer.
Persistent Identifierhttp://hdl.handle.net/10722/200548
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorHuang, Hen_US
dc.contributor.authorQian, Jen_US
dc.contributor.authorKuang, Xen_US
dc.contributor.authorChen, Ben_US
dc.contributor.authorMa, Len_US
dc.contributor.authorWu, Yen_US
dc.date.accessioned2014-08-21T06:51:41Z-
dc.date.available2014-08-21T06:51:41Z-
dc.date.issued2013en_US
dc.identifier.citationJournal of Hydrodynamics, Ser. B, 2013, v. 25, p. 867-870en_US
dc.identifier.urihttp://hdl.handle.net/10722/200548-
dc.description.abstractThe pumping test in an unconfined aquifer with and without a low-permeability soil was studied experimentally to reveal the influence of the negative air pressure (NP) caused by the upper layer on the water content (w), the water pressure (Pw), as well as on the capillary pressure (Pc). The study demonstrates that the NP generated in the vadose zone during pumping in the capper aquifer has a significant influence on w, Pw and Pc. The Pc obtained from the capped aquifer is smaller than that without the upper layer. After the NP reaches a peak, the influence of the NP on Pc is gradually declined as the air inflows through the upper layer which makes the NP gradually return to zero. When the air pressure returns to the atmospheric pressure, Pc in the vadose zone is only correlated with Pw, the same as the case with no upper layer.en_US
dc.languageengen_US
dc.publisherElsevier.en_US
dc.relation.ispartofJournal of Hydrodynamics, Ser. Ben_US
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in <Journal title>. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in PUBLICATION, [VOL#, ISSUE#, (DATE)] DOI#en_US
dc.titleThe influence of low-permeability cap on capillary pressure during pumping in unconfined aquiferen_US
dc.typeArticleen_US
dc.identifier.emailKuang, X: hkukxx@hku.hken_US
dc.identifier.doi10.1016/S1001-6058(13)60434-5en_US
dc.identifier.hkuros232021en_US
dc.identifier.volume25en_US
dc.identifier.spage867en_US
dc.identifier.epage870en_US
dc.identifier.isiWOS:000329336400007-
dc.publisher.placeShanghai, Chinaen_US

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