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2007 Fiscal Year Final Research Report Summary

The mechanism of piping failure and disaster prevention systems

Research Project

Project/Area Number 17310019
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Environmental impact assessment/Environmental policy
Research InstitutionUniversity of Tsukuba

Principal Investigator

ONDA Yuichi  University of Tsukuba, Graduate School of Life and Environmental Sciences, Associate Professor (00221862)

Co-Investigator(Kenkyū-buntansha) JITOUZONO Takashi  Kagoshima University, Faculty of Agrioulture, Associate Prof. (50145455)
SASAHARA Katsuo  Kouchi University, Faculty of Agruautltiue, Professor (90391622)
UCHIDA Tarou  Public Works Reserch Ins, Erosion and Sediment Control Research Group, Senior Researcher (60370780)
Project Period (FY) 2005 – 2007
KeywordsDisaster prevention / Flood / Mitigation / Disaster
Research Abstract

To examine the effects of air pressure under the grand for the landslide, field observation in Kyushu island and a large-size sprinkling experiment were conducted. At tableland, which is composed of Shirasu, in Kyushu, nearly always air pressure in a well was similar to atmospheric pressure and air did not get out from the well. However air pressure was bigger than atmospheric pressure while atmospheric pressure was falling. At the same event, an air flow was observed from another well called s 3. There was a time lag between these phenomena. The s 1 may different from s 3 in water systems, so it might different too in "air system". In the experiment, we pumped air to under a sand slope. Air pressures in the slope were not different so much even though we pumped high pressured air or low pressured air. However, when we pumped high pressured air, water daters changed clearly, for instance, discharge, pressure head, and hydraulic gradient. Therefore, effect of the pore air pressure for the landslide do not affect sand directly but indirectly though increasing of the hydraulic gradient of groundwater.

  • Research Products

    (21 results)

All 2008 2007 2006

All Journal Article (11 results) Presentation (10 results)

  • [Journal Article] Investigating erosion rates within a Japanese cypress plantation using Cs-137 and Pb-210ex measurements2008

    • Author(s)
      Fukuyama, T., Onda, Y., Takenaka, C., and Walling. DE.
    • Journal Title

      Journal of Geophysical Research, Earth Surface 113

      Pages: F02007

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Dynamic runoff connectivity of overland flow on steep forested hillslopes : scale effects and runoff transfer2008

    • Author(s)
      Gomi, T., Sidle, R. C., Miyata, S., Kosugi, K, Onda, Y.
    • Journal Title

      Water Resources Research(accepted)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Estimation of suspended sediment sources using 137Cs and 210Pbex in unmanaged Japanese cypress plantation watersheds in southern Japan2008

    • Author(s)
      Mizugaki, S., Onda, Y., Fukuyama, T., Koga, S., Asai, H., Hiramatsu
    • Journal Title

      Hydrological Processes(accepted)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Influence of void ratio on the dailatancy of unsaturated sandy soil2008

    • Author(s)
      Sasahara, K, Tamura, K
    • Journal Title

      Doboku Gakkai Ronbunshuu C 64(1)

      Pages: 30-42

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Shear strength and void ratio of unsaturated soil with different initial void ratio at failure, critical state2008

    • Author(s)
      Sasahara, K, Sakai, N., and Kurihara, J.,
    • Journal Title

      Doboku Gakkai Ronbunshuu C 64(2)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Sediment disaster in the Northern area in Kagoshima by the heavy rainfall in July 20062007

    • Author(s)
      Teramoto, Y., Shimokawa, E., Jitouzono, T.
    • Journal Title

      Bulletin of the Kagoshima University Forest 35

      Pages: 17-24

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Sediment disaster in the southern Kyushu by the heavy rainfall in July 20062007

    • Author(s)
      Shimizu, O, Jitouzono, T.
    • Journal Title

      Journal of the Japan Society of Erosion Control Engineering 59(5)

      Pages: 60-65

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Potential Site Prediction of Deep-seated Landslide in a volcanic rock area2006

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

      Journal of the Japan Society of Erosion Control Engineering 59(2)

      Pages: Ser. No.265

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Determing the criteria rainfall for debris flow warning and evacuation by rainfall-runoff response2006

    • Author(s)
      Onda, Y., Tsujimura, M., Tanaka, T., Sasaki, K., Mizuyama, T., Uchida, T., Tainaka, O., and Tanaka, H.
    • Journal Title

      Journal of the Japan Society of Erosion Control Engineering 58(5)

      Pages: 13-17

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Thresholds for bed load transport and channel initiation in a chert area in Ashio Mountains, Japan : An empirical approach from hydrogeomorphic observations2006

    • Author(s)
      Hattanji, H, Onda, Y., and Matsukura, Y.
    • Journal Title

      Journal of Geophysical Research, Earth Surface

      Pages: F02022

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Runoff generation mechanisms in high-relief mountainous watersheds with different underlying geology2006

    • Author(s)
      Onda, Y., Tsujimura, M., Fujihara, J., and Ito, J.
    • Journal Title

      Journal of Hydrology 331

      Pages: 659-673

    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] 不飽和砂質土のせん断特性に間隙比が与える影響について2007

    • Author(s)
      笹原克夫・酒井直樹・田村圭司・内田太郎
    • Organizer
      日本地すべり学会
    • Place of Presentation
      三重県
    • Year and Date
      2007-08-30
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] (2007) The effect of porocity on unsaturated shear characteristics2007

    • Author(s)
      Sasahara, K, et. al.
    • Organizer
      Japanese Society of landslides
    • Year and Date
      2007-08-30
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] 広島風化花崗岩起源まさ土の土壌水分特性曲線のパラメーター同定に関する研究2007

    • Author(s)
      谷本森道・笹原克夫・栗原淳一・酒井直樹
    • Organizer
      砂防学会
    • Place of Presentation
      福井県県民ホール
    • Year and Date
      2007-05-24
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] 四万十層群泥岩起源砂質土と広島風化花崗岩地帯まさ土の降雨浸透特性の比較2007

    • Author(s)
      笹原克夫・土橋修司・栗原淳一・酒井直樹
    • Organizer
      砂防学会
    • Place of Presentation
      福井県県民ホール
    • Year and Date
      2007-05-24
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] (2007) Comparing percolation characteristics of gruss and sedimentary rocks2007

    • Author(s)
      Tanimoto, M., Sasahara, K, et. al.
    • Organizer
      Japanse Society of Erosion Control Engineering
    • Place of Presentation
      Fukui
    • Year and Date
      2007-05-24
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] (2007) Comparing infiltration characteristcs sand stone mud-stone in Shimanto formationamdguruss in Hiroshima granite2007

    • Author(s)
      Sasahara, K, et. al.
    • Organizer
      Japanse Society of Erosion Control Engineering
    • Place of Presentation
      Fukui
    • Year and Date
      2007-05-24
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] 流出特性および地下水位変動特性を用いた土砂災害警戒避難基準長期雨2007

    • Author(s)
      恩田裕一・細田雄士・田中高志
    • Organizer
      砂防学会
    • Place of Presentation
      福井県県民ホール
    • Year and Date
      2007-05-23
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] 2006年7月の九州南部における豪雨による土砂災害2007

    • Author(s)
      清水収・地頭薗隆
    • Organizer
      砂防学会
    • Place of Presentation
      福井県県民ホール
    • Year and Date
      2007-05-23
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] Developing the evacuation criteria using groundwater level and discharge2007

    • Author(s)
      Onda, Y., Hosoda, Y., Tanaka, T
    • Organizer
      Japanse Society of Erosion Control Engineering
    • Place of Presentation
      Fukui
    • Year and Date
      2007-05-23
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] (2007) Sediment disaster in southern Kyushu on July 20062007

    • Author(s)
      Shimizu, O, Jitozono, T.
    • Organizer
      Japanse Society of Erosion Control Engineering
    • Place of Presentation
      Fukui
    • Year and Date
      2007-05-23
    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2010-02-04  

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