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An example of Specific V&V for slope disaster simulations

Research Project

Project/Area Number 18H01672
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 25030:Disaster prevention engineering-related
Research InstitutionTohoku University

Principal Investigator

Moriguchi Shuji  東北大学, 災害科学国際研究所, 准教授 (20447527)

Co-Investigator(Kenkyū-buntansha) 高瀬 慎介  八戸工業大学, 大学院工学研究科, 准教授 (00748808)
橘 一光  福島工業高等専門学校, 都市システム工学科, 助教 (20839295)
寺田 賢二郎  東北大学, 災害科学国際研究所, 教授 (40282678)
大竹 雄  東北大学, 工学研究科, 准教授 (90598822)
渦岡 良介  京都大学, 防災研究所, 教授 (40333306)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2020: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2019: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2018: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
KeywordsV&V / 落石 / 土砂流動 / 個別要素法 / 斜面災害 / シミュレーション
Outline of Final Research Achievements

It’s generally difficult to discuss the accuracy and reliability in disaster simulations. On the other hand, recently, V&V (Verification & Validation) of numerical simulations has been emphasized and widely discussed. The purpose of this study is to develop the information that are necessary for V&V of rockfall analysis and sediment flow analysis using the discrete element method (DEM). Specifically, information on the following three topics was studied based on the results of DEM analysis: setting up benchmark problems, quantification of the effect of uncertainties in DEM simulations, and frameworks for reducing computational cost.

Academic Significance and Societal Importance of the Research Achievements

DEMは,落石や土砂流動など,数値解析に広く用いられている連続体力学ベースの手法では解きにくい現象の表現を可能とするが,入力パラメータや解析結果の妥当性を根拠を持って示すことが難しい場面が多々ある.本研究で整備した情報は,入力パラメータや計算条件の影響の議論に有効なものであり,工学的な観点も含めて,DEMを落石解析や土砂流動解析に用いる際に重要な知見を提供するものである.今後,斜面災害分野においては災害リスク評価のためにDEMが広く利用されていくと予想されるが,その状況において,本研究で整備した情報が重要なものとなる.

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (27 results)

All 2021 2020 2019 2018

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (22 results) (of which Int'l Joint Research: 10 results,  Invited: 1 results) Book (2 results)

  • [Journal Article] A computational design optimization method for rockfall protection embankments2021

    • Author(s)
      Hasuka Kanno, Shuji Moriguchi, Shunsuke Hayashi, and Kenjiro Terada
    • Journal Title

      Engineering Geology

      Volume: 284 Pages: 105920-105920

    • DOI

      10.1016/j.enggeo.2020.105920

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 落石挙動の数値モデリング2021

    • Author(s)
      森口周二, 菅野蓮華, 寺田賢二郎,
    • Journal Title

      地盤工学会誌

      Volume: 69

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] QUANTIFICATION OF PARAMETER CONTRUBUTION IN GRANULAR FLOW SIMULATIONS USING THE DISCRETE ELEMENT METHOD2020

    • Author(s)
      MORIGUCHI Shuji、OKUYAMA Hiroki、TERADA Kenjiro、OTAKE Yu、AOKI Takayuki
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM))

      Volume: 76 Issue: 2 Pages: I_369-I_377

    • DOI

      10.2208/jscejam.76.2_I_369

    • NAID

      130007980163

    • ISSN
      2185-4661
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] 岩塊形状特性が落石挙動に与える影響の評価2021

    • Author(s)
      吉田大活, 菅野蓮華, 渡邊大規, 森口周二, 寺田賢二郎
    • Organizer
      令和2年度土木学会東北支部技術研究発表会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Contribution of DEM parameters in granular flow simulations2020

    • Author(s)
      Shuji Moriguchi, Hiroki Okuyama, Kenjiro Terada, Yu Otake
    • Organizer
      7th Asian-Pacific Symposium on Structural Reliability and Its Applications
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Quantification of the contribution of DEM parameters in granular flow simulations2020

    • Author(s)
      Shuji Moriguchi, Hiroki Okuyama, Kenjiro Terada
    • Organizer
      3rd International Conference on Computational Engineering and Science for Safety and Environmental Problems
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Surrogate-based sensitivity analysis for granular flow simulations using DEM2020

    • Author(s)
      Shuji Moriguchi, Hiroki Okuyama, Kenjiro Terada
    • Organizer
      14th World Congress on Computational Mecchanics(WCCM XIV) and 8th European Congress on Computational Methods in Applied Sciences and Engineering
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 個別要素法を用いた粒状体の流動解析に及ぼす解析パラメータの寄与度の定量化2020

    • Author(s)
      森口周二, 奥山大輝, 寺田賢二郎
    • Organizer
      第23回応用力学シンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] 個別要素法を用いた粒状体の流動解析における 入力パラメータの寄与度の定量化2020

    • Author(s)
      森口周二, 奥山大輝, 寺田賢二郎
    • Organizer
      第25回計算工学講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 個別要素法による土砂流動解析における定量的な要素サイズ決定基準の提案2020

    • Author(s)
      渡邊大規, 奥山大輝, 森口周二, 寺田賢二郎
    • Organizer
      第55回地盤工学研究発表会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Simulation-based optimal design approach for rockfall protection walls2019

    • Author(s)
      Shuji Moriguchi, Hasuka Kanno, Kenjiro Terada, Takashi Kyoya
    • Organizer
      2019 Rock Dynamics Summit in Okinawa
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A simulation of Hulu Langat landslide for disaster education2019

    • Author(s)
      Shuji. Moriguchi
    • Organizer
      Handover Ceremony to Selangor State Government and Knowledge Sharing Seminar by Flood and Landslide Experts
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Simulation-aided optimal design approach for rockfall protection walls2019

    • Author(s)
      S. Moriguchi, Hasuka Kanno, Kenjiro Terada
    • Organizer
      2nd International Symposium on Seismic Performance and Design of Slopes
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 落石解析における斜面の表面形状と物性値の空間的不確実性に関する解析的検討2019

    • Author(s)
      森口周二,菅野蓮華,上原直秀,寺田賢二郎
    • Organizer
      第22回応用力学シンポジウム
    • Related Report
      2019 Annual Research Report
  • [Presentation] 落石解析における斜面の表面形状と物性値の空間分布の影響2019

    • Author(s)
      森口周二,上原直秀,寺田賢二郎
    • Organizer
      第24回計算工学講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] DEM土砂流動解析におけるパラメータの感度分析2019

    • Author(s)
      森口周二,奥山大輝,寺田賢二郎
    • Organizer
      第26回信頼性設計技術WS & 第39回最適設計研究会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Numerical investigation of contribution of DEM parameters on granular flows and their correlations2019

    • Author(s)
      Hiroki Okuyama, Shuji Moriguchi, Kenjiro Terada, Takashi Kawai
    • Organizer
      7th Asian Pacific Congress on Computational Mechanics (APCOM 2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] DEMを用いた土砂流動解析における解析パラメータの相関分析2019

    • Author(s)
      奥山大輝,森口周二,寺田賢二郎,河井正
    • Organizer
      第24回計算工学講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 個別要素法による土砂流動シミュレーションのV&Vに関する基礎的研究2019

    • Author(s)
      渡邊大規, 奥山大輝,鬼頭昂平,森口周二,寺田賢二郎
    • Organizer
      土木学会東北支部技術研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 安息角に対する個別要素法のパラメータの感度分析2018

    • Author(s)
      森口周二,奥山大輝,寺田賢二郎,青木尊之
    • Organizer
      第21回応用力学シンポジウム
    • Related Report
      2018 Annual Research Report
  • [Presentation] Effects of repose angle and basal friction angle in granular flow simulations2018

    • Author(s)
      Shuji Moriguchi, Hiroki Okuyama, Kenjiro Terada, Tadashi Kawai, Takayuki Aoki
    • Organizer
      IS Atlanta 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effect of Spatial Distribution of Slope Material in Rockfall Simulations2018

    • Author(s)
      Shuji Moriguchi1, Naohide Uehara, Kenjito Terada
    • Organizer
      International Symposium on Seismic Performance and Design of Slopes 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 安息角に対する物性や粒子形状の影響2018

    • Author(s)
      奥山大輝,橘一光,寺田賢二郎,森口周二,青木尊之
    • Organizer
      第23回計算工学講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Effect of Spatial Distribution of Slope Material in Rockfall Simulations2018

    • Author(s)
      Shuji Moriguchi, Naohide Uehara, Kenjiro Terada
    • Organizer
      The 8th Japan-Korea Workshop on Computational Mechanics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 安息角をベースとした土砂流動解析のための個別要素法の解析パラメータ選定2018

    • Author(s)
      奥山大輝,橘一光,森口周二,寺田賢二郎,青木尊之
    • Organizer
      第53回地盤工学研究発表会
    • Related Report
      2018 Annual Research Report
  • [Book] 1.地盤・土構造物のリスクマネジメント ~地盤崩壊・液状化のメカニズムとその解析、監視、防災対策~2019

    • Author(s)
      森口周二 他35名
    • Total Pages
      338
    • Publisher
      エヌ・ティー・エス
    • Related Report
      2019 Annual Research Report
  • [Book] 地盤・土構造物のリスクマネジメント ~地盤崩壊・液状化のメカニズムとその解析、監視、防災対策~2018

    • Author(s)
      森口周二(35名の執筆者の一人)
    • Total Pages
      338
    • Publisher
      エヌ・ティー・エス
    • Related Report
      2018 Annual Research Report

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Published: 2018-04-23   Modified: 2022-01-27  

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