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2006 Fiscal Year Final Research Report Summary

Morphodynamical Studies of Performance of Flood-control Levee Systems

Research Project

Project/Area Number 16360237
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Geotechnical engineering
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

SEKIGUCHI Hideo  Kyoto University, Disaster Prevention Research Institute, Professor, 防災研究所, 教授 (20027296)

Co-Investigator(Kenkyū-buntansha) FUJITA Yuichiro  Gifu University, River Basin Research Center, Professor, 流域圏科学研究センター, 教授 (90027285)
KAMAI Toshitaka  Kyoto University, Disaster Prevention Research Institute, Professor, 防災研究所, 教授 (10277379)
HAMAGUCHI Toshio  Kyoto University, Disaster Prevention Research Institute, Assistant Professor, 防災研究所, 助教 (90263128)
Project Period (FY) 2004 – 2006
Keywordscrevasse splays / extreme flood / flood-control levee / floodplain management / GIS / hazard map / sediment gravity flow / subsurface flood-related features
Research Abstract

The urbanization in river basins and increased trend of extreme meteorological events have recently intensified flood disasters in Japan. Admittedly, however, it is unrealistic to make every river segments sided by high levees in such a way that no overflow can occur even under excessively high flood stage. The purpose of this research is to address the issue as to how the consequences of extreme flooding can be minimized in given flood-prone low-lying areas. An effective strategy may be to promote preparedness for water-related hazard risks through relevant geoinformatics. Most of the existing morphological maps in paper format were published decades ago, thus being somehow isolated from GIS and the INTERNET. Also, no or little clues of related hydrodynamical processes can be read off from such existing hazard maps. With these aspects in mind, the present research project focused on the following themes in a mutually interactive fashion.
(1)High-resolution Imaging of Flood-related Topo … More graphical Features ; The 2004 levee-breaching case with the Maruyama River was investigated in detail from a morphodynamical viewpoint. The field study identified a range of sedimentary features that were induced by the overflow and outburst and enabled the associated topographical changes to be quantified by making use of a digital photo-theodolite system. Also, critical examination was made of the usefulness and limitations of a thirty-year-old hazard map in paper format that depicted flood-prone morphological features in the river basin concerned.
(2)Development of Three-dimensional Analysis Code for Liquefied/Fluidized Sediment Flows ; The aim of this undertaking was to develop an analysis framework by which to relate flood-induced sedimentary features to the hydrodynamical processes operational. A two-dimensional analysis code (LIQSEDFLOW by Sassa et al., 2003) for liquefied sediment gravity flows was extended to a fully three-dimensional version, with an application to the 2004 levee-breaching case stated above.
(3)Identifying Subsurface Flood-related Features through Geophysical/Sedimentological Surveys ; Combined geophysical/sedimentological surveys have been performed in the Uji River floodplain where flood disasters frequently took place even in the past 100 years or so. The subsurface features identified include old channels, buried sand bars and event sand layers containing mud clasts. The methodology may be of use in assessing the quality of old-channel fills, for instance. Less

  • Research Products

    (20 results)

All 2007 2006 2005 2004

All Journal Article (20 results)

  • [Journal Article] Bank erosion as an indicator of channel morphodynamical evolution2007

    • Author(s)
      Azuma, R.
    • Journal Title

      Proc. Vietnam-Japan Symp. Mitigation&Adaptation of Climate-change-induced natural Disasters, Hue (in press)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Studies of high-resolution morphodynamics with special reference to river bank erosion2007

    • Author(s)
      Azuma, R.
    • Journal Title

      Annuals, DPRI, Kyoto University (in press)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Bank erosion as an indicator of channel morphodynamical evolution.2007

    • Author(s)
      Azuma, R., Sekiguchi, H., Muto, Y., Ono, T.
    • Journal Title

      Proc.Vietnam-Japan Symp.on Mitigation&Adaptation of Climate-change-induced Natural Disasters, Hue (in press)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Studies of high-resolution morphodynamics with special reference to river bank erosion.2007

    • Author(s)
      Azuma, R., Sekiguchi, H., Ono, T.
    • Journal Title

      Annuals, DPRI, Kyoto University (in press)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Subaqueous sediment gravity flows undergoing progressive solidification2006

    • Author(s)
      Amiruddin
    • Journal Title

      Norwegian Journal of Geology 86(3)

      Pages: 285-293

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] The dynamics of sediment gravity flows following fluidization2006

    • Author(s)
      Amiruddin
    • Journal Title

      Geomechanics II, Geotechnical Special Publication, ASCE 156

      Pages: 500-514

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Performance of levee system at flood stage2006

    • Author(s)
      Azuma, R.
    • Journal Title

      Annuals, DPRI, Kyoto University 49(C)

      Pages: 225-235

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] New approach to distributed parameter identification in groundwater hydrology under geostatistics-generated observations2006

    • Author(s)
      Hamaguchi, T.
    • Journal Title

      Proc. 3^<rd> Int. Conf. on Hydrology and Water Resources in Asia Pacific Region (CD-ROM)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Earthquake risk assessment of artificial fill slope in urban residential region2006

    • Author(s)
      Kamai, T.
    • Journal Title

      The 6^<th> Japan-Taiwan Joint Seminar on Natural Hazard Mitigation

      Pages: 10

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Subaqueous sediment gravity flows undergoing progressive solidification.2006

    • Author(s)
      Amiruddin, Sekiguchi, H., Sassa, S.
    • Journal Title

      Norwegian Journal of Geology 86(3)

      Pages: 285-293

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] The dynamics of sediment gravity flows following fluidization.2006

    • Author(s)
      Amiruddin, Sekiguchi, H., Sassa, S.
    • Journal Title

      Geomechanics II, Geotechnical Special Publication, ASCE 3

      Pages: 285-293

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Performance of levee system at flood stage.2006

    • Author(s)
      Azuma, R., Sekiguchi, H., Ono, T.
    • Journal Title

      Annuals, DPRI, Kyoto University 49【○!C】

      Pages: 225-235

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] New approach to distributed parameter identification in groundwater hydrology under geostatistics-generated observations.2006

    • Author(s)
      Hamaguchi, T., Kojiri, T., Nakakita, E.
    • Journal Title

      Proc. 3rd Int.Conf.on Hydrology and Water Resources in Asia Pacific Region (CD-ROM)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Earthquake risk assessment of artificial fill slope in urban residential region.2006

    • Author(s)
      Kamai, T.
    • Journal Title

      Proc.6^<th> Japan-Taiwan Joint Seminar on Natural Hazard Mitigation

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] 気象水文イベントに対する砂浜内のサクション応答予測2005

    • Author(s)
      関口秀雄
    • Journal Title

      海岸工学論文集 52

      Pages: 1076-1080

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Response of suction in a sand fill under event-accentuated meteorological forcing.2005

    • Author(s)
      Sekiguchi, H., Li, F., Sassa, S.
    • Journal Title

      Annual J.Coastal Engineering, JSCE(in Japanese) 52

      Pages: 1076-1080

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Analysis of three-dimensional sediment gravity flows2004

    • Author(s)
      Amiruddin
    • Journal Title

      Annuals, DPRI, Kyoto University 47B

      Pages: 617-633

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Progressive solidification of a liquefied sand layer during continued wave loading2004

    • Author(s)
      Miyamoto, J.
    • Journal Title

      Geotechnique 54(10)

      Pages: 617-629

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Analysis of three-dimensional sediment gravity flows.2004

    • Author(s)
      Amiruddin, Sassa, S., Sekiguchi, H.
    • Journal Title

      Annuals, DPRI, Kyoto University 47B

      Pages: 401-405

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Progressive solidification of a liquefied sand layer during continued wave loading.2004

    • Author(s)
      Miyamoto, J., Sassa, S., Sekiguchi, H.
    • Journal Title

      Geotechnique 54(10)

      Pages: 617-629

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2008-05-27  

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