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A Study on establishment of landslide early warning system considering stress history of slopes in Indochina Countries

Research Project

Project/Area Number 17H04584
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section海外学術
Research Field Geotechnical engineering
Research InstitutionKyoto University

Principal Investigator

Ohtsu Hiroyasu  京都大学, 工学研究科, 教授 (40293881)

Co-Investigator(Kenkyū-buntansha) 立川 康人  京都大学, 工学研究科, 教授 (40227088)
北岡 貴文  京都大学, 工学研究科, 助教 (40741583)
小林 晃  関西大学, 環境都市工学部, 教授 (80261460)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2019: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2018: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
Keywords地盤工学 / 自然災害
Outline of Final Research Achievements

It was revealed that the in-situ SWCC, which shows the correlation between suction and volumetric water content, is divided into three portions, the macro-pore flow dominant portion, the transition portion, and the matrix flow dominant portion, with the pore-water pressure as the threshold value. Among these, the in situ SWCC of the matrix flow predominant portion is similar to the conventional theory of unsaturated soil because it is corresponding to the behavior in a quasi-equilibrium condition. On the other hand, since the in-situ SWCCs in the other two portions, which are in the low suction state, are corresponding to behaviors in a non-equilibrium condition so that there is no unique relationship between the suction and the volumetric water content, they could not be explained by conventional theory. Then, it was clarified that the macro-pore flow may accelerate the formation of the pseudo-saturation region so that the macro-pore flow may induce the shallow landslide.

Academic Significance and Societal Importance of the Research Achievements

当該斜面における物理探査結果により得られた知見として、高密度電気探査結果での比抵抗分布より浅層部(深度1.0m程度)の地盤構造を解明するためには、電極間隔を短くすることに加えて、比抵抗値の主要パラメータが飽和度であることから、乾季と雨季における探査結果での比抵抗分布の差分を用いることが有効であることを明らかにした。
次に、原位置計測結果において、本研究では、高強度降雨に対する間隙圧・体積含水率が急変する現象を選択流の概念に準じて,土中水の移動をマトリックス部とマクロポア部の流れに分離して検討を加えた結果、同現象は、マクロポア流に起因することを明らかにした.

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (30 results)

All 2020 2019 2018 2017

All Journal Article (10 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 9 results,  Open Access: 5 results) Presentation (20 results) (of which Int'l Joint Research: 4 results)

  • [Journal Article] An Applicability of electrical prospecting for investigation on change of moisture retention during wetting and dry condition at shallow area of slopes2019

    • Author(s)
      OHTSU Hiroyasu、KITAOKA Takafumi、BABA Takaaki、PIPATPONGSA Thirapong、ITO Shunichiro、AIZAWA Takao
    • Journal Title

      Japanese Geotechnical Journal

      Volume: 14 Issue: 3 Pages: 241-252

    • DOI

      10.3208/jgs.14.241

    • NAID

      130007722557

    • ISSN
      1880-6341
    • Year and Date
      2019-08-31
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Applicability of Neural Network in Rock Classification of Mountain Tunnel2019

    • Author(s)
      Hasegawa Nobusuke、Hasegawa Shingo、Kitaoka Takafumi、Ohtsu Hiroyasu
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 60 Issue: 5 Pages: 758-764

    • DOI

      10.2320/matertrans.Z-M2019809

    • NAID

      130007636523

    • ISSN
      1345-9678, 1347-5320
    • Year and Date
      2019-05-01
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] INFLUENCE OF CHARACTERISTICS OF TRAINING DATA SET ON THE ACCURACY OF ROCK CLASSIFICATION ESTIMATION FOR MOUNTAIN TUNNELS BY ARTIFICIAL NEURAL NETWORK2019

    • Author(s)
      TSUCHIYA Yotaro、KITAOKA Takafumi、HASEGAWA Nobusuke、PIPATPONGSA Thirapong、OHTSU Hiroyasu
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. F1 (Tunnel Engineering)

      Volume: 75 Issue: 1 Pages: 130-142

    • DOI

      10.2208/jscejte.75.130

    • NAID

      130007769923

    • ISSN
      2185-6575
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Characteristics of Fine Particle Distribution at Cut Slope and Fill Slope Comprising Weathered Granite2018

    • Author(s)
      Ohtsu Hiroyasu、Pipatpongsa Thirapong、Kitaoka Takafumi、Ito Shunichiro、Yabe Mitsuru、Suttisak Soralump
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 59 Issue: 11 Pages: 1723-1730

    • DOI

      10.2320/matertrans.Z-M2018839

    • NAID

      40021711632

    • ISSN
      1345-9678, 1347-5320
    • Year and Date
      2018-11-01
    • Related Report
      2018 Annual Research Report
  • [Journal Article] A Study on Characteristics of Fine Particle Distribution at Cut Slope and Fill Slope Comprising Weathered Granite2018

    • Author(s)
      大津 宏康, Pipatpongsa Thirapong, 北岡 貴文, 伊東 俊一郎, 矢部 満, Suttisak Soralump
    • Journal Title

      Journal of the Society of Materials Science, Japan

      Volume: 67 Issue: 3 Pages: 346-353

    • DOI

      10.2472/jsms.67.346

    • NAID

      130006515965

    • ISSN
      0514-5163, 1880-7488
    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Applicability of Neural Network in Rock Classification of Mountain Tunnel2018

    • Author(s)
      長谷川 信介, 長谷川 真吾, 北岡 貴文, 大津 宏康
    • Journal Title

      Journal of the Society of Materials Science, Japan

      Volume: 67 Issue: 3 Pages: 354-359

    • DOI

      10.2472/jsms.67.354

    • NAID

      130006515967

    • ISSN
      0514-5163, 1880-7488
    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A study of the method of GALDIT for groundwater vulnerability assessment in the Bangkok metropolitan area2018

    • Author(s)
      北岡 貴文, 新治 義久, ピパットポンサー・ ティラポン, 大津 宏康
    • Journal Title

      Japanese Geotechnical Journal

      Volume: 13 Issue: 1 Pages: 27-40

    • DOI

      10.3208/jgs.13.27

    • NAID

      130006594561

    • ISSN
      1880-6341
    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 地下ダム貯水湖内の溶質輸送挙動に関する実験的検討2018

    • Author(s)
      井上一哉,濱田莉菜子,小林晃
    • Journal Title

      土木学会論文集B1(水工学)

      Volume: 74-4

    • NAID

      130007628204

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Future river discharge projections at the Indochinese Peninsula using large ensemble climate dataset2018

    • Author(s)
      Patinya HANITTINAN, Yasuto TACHIKAWA, Yutaka ICHIKAWA and Kazuaki YOROZU
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)

      Volume: 74-1

    • NAID

      130007628215

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] ダムの地震時挙動の傾向分析から見た耐震性評価の考え方2017

    • Author(s)
      小林晃
    • Journal Title

      水土の知

      Volume: 85-3 Pages: 229-232

    • NAID

      130007968081

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Presentation] ニューラルネットワークを用いた堆積岩および火成岩に分類した山岳トンネルにおける地山評価結果2020

    • Author(s)
      増田千胤,北岡貴文,長谷川信介,大津宏康
    • Organizer
      第47回岩盤力学に関するシンポジウム講演論文集
    • Related Report
      2019 Annual Research Report
  • [Presentation] 原位置計測結果を用いた降雨特性についての検討2019

    • Author(s)
      吉田伊織,大津宏康,北岡貴文
    • Organizer
      2019年度土木学会関西支部年次学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] KW式を用いた盛土斜面における降雨浸透特性に関する研究2019

    • Author(s)
      北岡貴文,吉田伊織,ピパットポンサーティラポン,大津宏康
    • Organizer
      第54回地盤工学研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 浅部物理探査を用いた風化花崗岩盛土斜面の降雨浸透特性の評価2019

    • Author(s)
      長谷川信介,櫻井健,矢部満,北岡貴文,大津宏康
    • Organizer
      第54回地盤工学研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] マクロサイズの空隙分布が降雨に伴うサクションおよび体積含水率の変化におよぼす影響2019

    • Author(s)
      4.北岡貴文,吉田伊織,矢部満,Pipatpongsa Thirapong,大津宏康
    • Organizer
      地下水地盤環境・防災・計測技術に関するシンポジウム論文集
    • Related Report
      2019 Annual Research Report
  • [Presentation] 不均質な空隙分布が土壌雨量指数を用いた間隙圧推定におよぼす影響2019

    • Author(s)
      前川竜兵,北岡貴文,Pipatpongsa Thirapong,大津宏康
    • Organizer
      地下水地盤環境・防災・計測技術に関するシンポジウム論文集
    • Related Report
      2019 Annual Research Report
  • [Presentation] Characteristics of River Discharge Simulation Using NHRCM 5kmOutput by a Distributed Hydrologic Model in Thailand2019

    • Author(s)
      Aulia Febianda Anwar Tinumbang, Kazuhiro Yorozu, Yutaka Ichikawa and Yasuto Tachikawa
    • Organizer
      THA 2019 International Conference on Water Management and Climate Change towards Asia's Water-Energy-Food Nexus and SDGs
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] タンクモデルを用いた間隙圧推定に関する研究2018

    • Author(s)
      前川竜兵,北岡貴文,大津宏康
    • Organizer
      平成30年度土木学会関西支部年次学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] バンコク周辺地域における地層の不連続性の検討2018

    • Author(s)
      増田千胤,北岡貴文,Pipatpongsa Thirapong,大津 宏康
    • Organizer
      平成30年度土木学会関西支部年次学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 土壌雨量指数に着目した間隙圧推定手法と各種降雨指標の比較検討2018

    • Author(s)
      北岡貴文,前川竜兵,ピパットポンサーティラポン,大津宏康
    • Organizer
      第53回地盤工学研究発表会
    • Related Report
      2018 Annual Research Report
  • [Presentation] A study on field soil water characteristic curves measured at slopes comprising weathered granite residual soil in Thailand2018

    • Author(s)
      H. Ohtsu, T. Kitaoka, M. Yabe and K. Takahashi
    • Organizer
      Proceedings of 10th Asian Rock Mechanics Symposium The ISRM International Symposium for 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 粒径加積曲線に基づく不飽和浸透特性の推定手法に関する考察2018

    • Author(s)
      北岡貴文,馬場隆聡,大津宏康
    • Organizer
      地下水地盤環境・防災・計測技術に関するシンポジウム
    • Related Report
      2018 Annual Research Report
  • [Presentation] 多層ニューラルネットワークを用いた山岳トンネルにおける地山評価の検討2018

    • Author(s)
      土谷陽太郎,北岡貴文,長谷川信介,大津宏康
    • Organizer
      第46回岩盤力学に関するシンポジウム
    • Related Report
      2018 Annual Research Report
  • [Presentation] 簡易原位置注水実験による試験風化花崗岩残積土の吸水・保水特性の検討2018

    • Author(s)
      北岡貴文
    • Organizer
      第45回岩盤力学に関するシンポジウム
    • Related Report
      2017 Annual Research Report
  • [Presentation] 体積変化を考慮した水分保持特性に関する研究2017

    • Author(s)
      馬場隆聡
    • Organizer
      平成29年度土木学会関西支部年次学術講演会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Study on water retention characteristics considering volume change2017

    • Author(s)
      Takaaki Baba
    • Organizer
      EIT-JGCA Joint International Symposium on Scope of Engineering Geology under Climate Change, 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] バンコク首都圏における広域地下水流動および地下水水質分析に関する検討2017

    • Author(s)
      北岡貴文
    • Organizer
      第52回地盤工学研究発表会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Statistical Analysis of differences between probability distribution of the annual maximum daily discharge derived from multiple SSTs scenarios of the d4PDF datasets at the Indochinese Peninsula2017

    • Author(s)
      Patinya HANITTINAN
    • Organizer
      AOGS2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] Electrical-conductivity-distribution measurement using an electromagnetic survey of paddy fields damaged by TSUNAMI2017

    • Author(s)
      Akira Kobayashi
    • Organizer
      Sixteenth International Waste Management and Landfill Symposium
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 既設井戸を用いた地中熱ヒートポンプ熱応答試験2017

    • Author(s)
      小林晃
    • Organizer
      地下水地盤環境・防災・計測技術に関するシンポジウム
    • Related Report
      2017 Annual Research Report

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Published: 2017-04-28   Modified: 2021-02-19  

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