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Hydrological observation of subsurface flow spouting from pipe exits in torrent bed material and its triggering rainfall condition for the prediction of debris flow generation

Research Project

Project/Area Number 24310137
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypePartial Multi-year Fund
Section一般
Research Field Natural disaster science
Research InstitutionMie University

Principal Investigator

YAMADA TAKASHI  三重大学, 生物資源学研究科, 教授 (20333635)

Co-Investigator(Kenkyū-buntansha) NUMAMOTO Shinya  三重大学, 大学院生物資源学研究科, 准教授 (60324555)
TSUCHIYA Satoshi  静岡大学, (連合)農学研究科, 教授 (60197720)
GONDA Yutaka  新潟大学, 農学部, 准教授 (10303116)
Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Keywords土石流 / 渓床堆積物 / 伏流水 / パイプ流 / 現地観測 / 発生限界基準雨量 / RBFN手法 / タンクモデル / モデル化 / 土石流発生予測
Outline of Final Research Achievements

Several pipe exits were discovered in the torrent bed material in debris flow generation areas of the Nishinokaito River, Mount Fujiwara ,Mie prefecture, Japan. They were emplaced in a sand and gravel layer between 1.0 and 1.5 m below the surface of the torrent bed material. Gravel supported the internal walls of the pipe exits. Subsurface flows spouted when the rainfall intensity exceeded about 5 to 7 mm in 10 minutes and the soil water index exceeded about 110 mm. Hydrological processes such as subsurface flows spouting from pipe exits and its clogging, subsurface flows spouting at the new pipe exits during heavy rainfall may lead to debris flow generation. The critical rainfall thresholds for them were studied using radial basis function network (RBFN) method.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Annual Research Report
  • 2012 Annual Research Report
  • Research Products

    (12 results)

All 2015 2014 2013 2012

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results,  Acknowledgement Compliant: 2 results) Presentation (10 results)

  • [Journal Article] 大谷崩「一ノ沢」における渓床砂礫の流動過程とその考察2015

    • Author(s)
      宥免憲樹・經隆悠・今泉文寿・逢坂興宏
    • Journal Title

      中部森林研究

      Volume: 63 Pages: 137-140

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] 三重県いなべ市藤原岳西之貝戸川での渓床堆積物におけるパイプ孔の存在と豪雨中のパイプ流発生・非発生降雨条件2014

    • Author(s)
      佐藤博文,山田孝,花田浩一,平山賢次,堀内望
    • Journal Title

      砂防学会誌

      Volume: 66 Pages: 50-55

    • NAID

      130005111399

    • Related Report
      2014 Annual Research Report 2013 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] 浜松市春野町で発生した大規模崩落とその要因2014

    • Author(s)
      土屋智
    • Organizer
      第3回中部森林学会大会
    • Place of Presentation
      名古屋大学
    • Year and Date
      2014-10-25
    • Related Report
      2014 Annual Research Report
  • [Presentation] 渓床堆積物再移動型土石流頻発渓流での伏流水の短期流出特性とタンクモデルの適用2014

    • Author(s)
      原太一、林希宝、山田孝
    • Organizer
      砂防学会
    • Place of Presentation
      新潟コンベンションセンタ-
    • Year and Date
      2014-05-28
    • Related Report
      2014 Annual Research Report
  • [Presentation] 豪雨時に渓床堆積物から噴出する伏流水の閉塞とRBFN手法を用いた土石流発生限界雨量2013

    • Author(s)
      山田真悟、山田孝、菊池英明
    • Organizer
      砂防学会
    • Place of Presentation
      静岡市市民文化会館
    • Related Report
      2013 Annual Research Report
  • [Presentation] 土石流頻発渓流における降雨-流出特性の解明2013

    • Author(s)
      原太一、林希宝、山田孝
    • Organizer
      中部森林学会
    • Place of Presentation
      岐阜大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] 2013年夏期寡雨時の平倉演習林内小流域における流出量と土壌水分2013

    • Author(s)
      西澤啓司・沼本晋也
    • Organizer
      中部森林学会
    • Place of Presentation
      岐阜大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] 浜松市春野町で発生した大規模崩落とその要因2013

    • Author(s)
      土屋智
    • Organizer
      中部森林学会
    • Place of Presentation
      岐阜大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] 三重県いなべ市藤原岳西之貝戸川におけるパイプ孔の閉塞と渓床堆積物の不安定化2012

    • Author(s)
      山田真悟, 山田孝
    • Organizer
      中部森林学会
    • Place of Presentation
      信州大学農学部
    • Year and Date
      2012-10-23
    • Related Report
      2012 Annual Research Report
  • [Presentation] 平成16年台風21号および平成23年台風12号における降雨パターンと斜面崩壊の実態調査2012

    • Author(s)
      高橋理沙、山田孝
    • Organizer
      中部森林学会
    • Place of Presentation
      信州大学農学部
    • Year and Date
      2012-10-23
    • Related Report
      2012 Annual Research Report
  • [Presentation] 春日谷流域上流における豪雨後の土砂収支と流域特性2012

    • Author(s)
      北野巧真、沼本晋也
    • Organizer
      中部森林学会
    • Place of Presentation
      信州大学農学部
    • Year and Date
      2012-10-23
    • Related Report
      2012 Annual Research Report
  • [Presentation] 渓床堆積物中におけるパイプ流発生条件及び関連する水文現象2012

    • Author(s)
      佐藤博文、山田孝
    • Organizer
      砂防学会研究発表会
    • Place of Presentation
      高知県立県民文化ホール
    • Year and Date
      2012-05-23
    • Related Report
      2012 Annual Research Report

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Published: 2012-04-24   Modified: 2019-07-29  

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