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Article: Topographic features and initiation of earth flows on Heifangtai loess plateau
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TitleTopographic features and initiation of earth flows on Heifangtai loess plateau
 
AuthorsWu, CX2
Xu, L2
Dai, FC2
Min, H3
Tham, LG1
Kwong, AKL1
Zhou, YF1
 
KeywordsAgricultural Irrigation
Groundwater Flow Modeling
Heifangtai
Laboratory Tests
Loess Earth Flow/Landslide
 
Issue Date2011
 
Publisher中國科學院武漢巖土力學研究所. The Journal's web site is located at http://ytlx.chinajournal.net.cn/
 
CitationYantu Lixue/Rock And Soil Mechanics, 2011, v. 32 n. 6, p. 1767-1773 [How to Cite?]
 
AbstractAgricultural irrigation on Heifangtai loess plateau has triggered dozens of loess earth flows. In this paper, IKONOS image was first used to interpret the topographic features of those earth flows, complimented with a detailed field-walk survey. The results indicated that loess earth flows had a travel distance of over 300 m, constituting the most destructive threat. The failed material was deposited in a flow-like lobe form. The elevation of the underlying impermeable clay was measured from the outcrops and boreholes, indicating that the eastern part of the plateau was lower than the west. It was observed from groundwater flow modeling that groundwater flow was controlled by the topography of underlying impermeable clay, and converged and partially discharged in the east margin of Heifangtai. This is in coincident with the phenomena that most loess earth flows occurred in the east margin. Laboratory stress path tests were then performed on undisturbed specimens to explain the failure mechanism of loess. The test results show that the initiation of loess earth flow is probably triggered by static liquefaction resulting from rise of groundwater table.
 
ISSN1000-7598
2013 SCImago Journal Rankings: 0.875
 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorWu, CX
 
dc.contributor.authorXu, L
 
dc.contributor.authorDai, FC
 
dc.contributor.authorMin, H
 
dc.contributor.authorTham, LG
 
dc.contributor.authorKwong, AKL
 
dc.contributor.authorZhou, YF
 
dc.date.accessioned2012-06-26T06:05:52Z
 
dc.date.available2012-06-26T06:05:52Z
 
dc.date.issued2011
 
dc.description.abstractAgricultural irrigation on Heifangtai loess plateau has triggered dozens of loess earth flows. In this paper, IKONOS image was first used to interpret the topographic features of those earth flows, complimented with a detailed field-walk survey. The results indicated that loess earth flows had a travel distance of over 300 m, constituting the most destructive threat. The failed material was deposited in a flow-like lobe form. The elevation of the underlying impermeable clay was measured from the outcrops and boreholes, indicating that the eastern part of the plateau was lower than the west. It was observed from groundwater flow modeling that groundwater flow was controlled by the topography of underlying impermeable clay, and converged and partially discharged in the east margin of Heifangtai. This is in coincident with the phenomena that most loess earth flows occurred in the east margin. Laboratory stress path tests were then performed on undisturbed specimens to explain the failure mechanism of loess. The test results show that the initiation of loess earth flow is probably triggered by static liquefaction resulting from rise of groundwater table.
 
dc.description.naturelink_to_subscribed_fulltext
 
dc.identifier.citationYantu Lixue/Rock And Soil Mechanics, 2011, v. 32 n. 6, p. 1767-1773 [How to Cite?]
 
dc.identifier.epage1773
 
dc.identifier.issn1000-7598
2013 SCImago Journal Rankings: 0.875
 
dc.identifier.issue6
 
dc.identifier.scopuseid_2-s2.0-79959885736
 
dc.identifier.spage1767
 
dc.identifier.urihttp://hdl.handle.net/10722/150575
 
dc.identifier.volume32
 
dc.languageeng
 
dc.publisher中國科學院武漢巖土力學研究所. The Journal's web site is located at http://ytlx.chinajournal.net.cn/
 
dc.publisher.placeChina
 
dc.relation.ispartofYantu Lixue/Rock and Soil Mechanics
 
dc.relation.referencesReferences in Scopus
 
dc.subjectAgricultural Irrigation
 
dc.subjectGroundwater Flow Modeling
 
dc.subjectHeifangtai
 
dc.subjectLaboratory Tests
 
dc.subjectLoess Earth Flow/Landslide
 
dc.titleTopographic features and initiation of earth flows on Heifangtai loess plateau
 
dc.typeArticle
 
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<contributor.author>Xu, L</contributor.author>
<contributor.author>Dai, FC</contributor.author>
<contributor.author>Min, H</contributor.author>
<contributor.author>Tham, LG</contributor.author>
<contributor.author>Kwong, AKL</contributor.author>
<contributor.author>Zhou, YF</contributor.author>
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Author Affiliations
  1. The University of Hong Kong
  2. Institute of Geology and Geophysics Chinese Academy of Sciences
  3. Chinese Academy of Sciences