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Investigation on development history of deep-seated gravitational slope deformation and its application for slope disaster mitigation

Research Project

Project/Area Number 19K03990
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 17030:Human geosciences-related
Research InstitutionGifu University

Principal Investigator

Kojima Satoru  岐阜大学, 工学部, 教授 (20170243)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords山体重力変形地形 / DSGSD / 地すべり / 深層崩壊 / テフラ / 放射性炭素年代 / 最終氷期 / 予測 / 氷河期 / 地域性火山灰 / スプレッド型地すべり / 焼岳 / 福島県 / 火山灰層序学 / 上高地 / 井川峠 / スイスアルプス / 斜面変動 / 二重山稜 / 山向小崖
Outline of Research at the Start

山体は重力により変形し,山体重力変形地形(deep-seated gravitational slope deformation,以下DSGSDと略)を作り出す.申請者は,過去数年間の研究の過程で,DSGSDには深層崩壊の前兆現象としてのDSGSDと長期間にわたって安定して存在するDSGSDがあることを見出した.両者を識別する手法を開発し,識別されたDSGSDについて衛星画像等の情報を用いた活動度の推定を広域的に行い,精度の高い深層崩壊危険度マップを作成するための手法を開発する.これらの結果は,防災行政への貢献や斜面災害の被害軽減に大きく貢献すると考えられる.

Outline of Final Research Achievements

Deep-seated gravitational slope deformation (DSGSD) in the Kanmuriyama area was formed ca. 11,000 years ago, and not deformed after that. It means some of the DSGSDs are not the precursors of the deep-seated landslides. In the Yamato area there occurred landslides two times, and before the slides the DSGSDs were developed. On the other hand the Kuchisakamoto landslides in the Southern Alps in Japan have no relationship with DSGSDs on the ridges above the slides. In the Kamikochi area huge mountain slopes gravitationally deformed, and the inner geological structures are clarified by the geomorphological and geological surveys. Now I'm making the research on up hill-facing slopes in the Bedretto area in Switzerland where thick glacier was retreated after the Last Glacial Maximum.

Academic Significance and Societal Importance of the Research Achievements

山体重力変形地形には、長期に渡って安定して存在するものと、深層崩壊の前兆現象として形成されるものが存在することが明らかとなった。前者の多くは、最終氷期後の湿潤温暖期(約1万年前)に形成され、その後は安定している。一方、美濃帯の大和地域のように突発性地すべりの前に前兆現象として形成される山体重力変形地形も存在する。さらに、南アルプスの口坂本地域のように、長期に渡って継続的に地すべりを起こしている場合には、その上部にみられる山体重力変形地形は変化しない。以上のような事実を考慮しながら、山体重力変形地形を深層崩壊の予知に利用していく必要がある。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (12 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (1 results) Journal Article (7 results) (of which Peer Reviewed: 7 results,  Open Access: 1 results) Presentation (4 results) (of which Int'l Joint Research: 1 results)

  • [Int'l Joint Research] ローザンヌ大学(スイス)

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Development History of Deep-Seated Gravitational Slope Deformation(DSGSD)in the Kanmuriyama Area, Central Japan2022

    • Author(s)
      Kojima, S., Niwa, R., Iwamoto, N., Kaneda, H., Hattori, K., Komura, K., Yamazaki, T., Yasunaga, K.
    • Journal Title

      Journal of the Japan Society of Engineering Geology

      Volume: 63 Issue: 1 Pages: 2-12

    • DOI

      10.5110/jjseg.63.2

    • ISSN
      0286-7737, 1884-0973
    • Year and Date
      2022-04-10
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Development history of deep-seated gravitational slope Ddeformation (DSGSD) in the Kanmuriyama area, central Japan2022

    • Author(s)
      Kojima, S., Niwa, R., Iwamoto, N., Kaneda, H., Hattori, K., Komura, K., Yamazaki, Y. and Yasunaga, K.
    • Journal Title

      Jour. Japan Soc. Eng. Geol.

      Volume: 63 Pages: 2-12

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Local tephra as an age-determination tool: Example of 2.3 ka Yakedake volcano tephra in Nagano Prefecture, central Japan2021

    • Author(s)
      Kojima, S., Kagami, S., Yokoyama, T., Kariya, Y., Katayama, Y. and Nishio, G.
    • Journal Title

      Proceedings of the 5th International Workshop on Rock Mechanics and Engineering Geology in Volcanic Fields (RMEGV2021)

      Volume: -

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Spread-type landslides in volcanic terrains in Japan: A case study on the Edamatsu spread in Fukushima Prefecture.2021

    • Author(s)
      Kato, Y. and Kojima, S.
    • Journal Title

      Proceedings of the 5th International Workshop on Rock Mechanics and Engineering Geology in Volcanic Fields (RMEGV2021)

      Volume: -

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] 平成30年7月豪雨による岐阜県での土砂災害2021

    • Author(s)
      永田秀尚・林 拙郎・篠田繁幸・藤井幸泰・伏木 治・日野康久・居川信之・地主卓弥・加藤靖郎・小嶋 智・高木郁生・田村浩行・都築孝之・梅原正敏・吉田一也
    • Journal Title

      応用地質

      Volume: 62 Pages: 82-91

    • NAID

      130008114344

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] 長野県上高地南東山地における重力斜面変形とその発達過程2021

    • Author(s)
      永田秀尚・小嶋 智
    • Journal Title

      山の科学

      Volume: 4

    • NAID

      130008139590

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Synchronized gravitational slope deformation and active faulting: A case study on and around the Neodani fault, central Japan2020

    • Author(s)
      Komura Keitaro、Kaneda Heitaro、Tanaka Tomoki、Kojima Satoru、Inoue Tsutomu、Nishio Tomohiro
    • Journal Title

      Geomorphology

      Volume: 365 Pages: 107214-107214

    • DOI

      10.1016/j.geomorph.2020.107214

    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 福島県下郷町のスプレッド地すべり:地溝埋積堆積物およびすべり面粘土の特徴2022

    • Author(s)
      小嶋 智,井上息吹,鵜飼隼太朗,加藤靖郎
    • Organizer
      日本地球惑星科学連合2022年大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Local tephra as an age-determination tool: Example of 2.3 ka Yakedake Volcano tephra in Nagano Prefecture, central Japan2021

    • Author(s)
      Satoru Kojima, Saya Kagami, Tatsunori Yokoyama, Yoshihiko Kariya, Yoshikazu Katayama and Gaku Nishio
    • Organizer
      5th International Workshop on Rock Mechanics and Engineering Geology in Volcanic Fields
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 長野県,上高地南東の徳本峠付近の山上凹地の形成年代2020

    • Author(s)
      小嶋 智・永田秀尚
    • Organizer
      日本応用地質学会令和2年度研究発表会
    • Related Report
      2020 Research-status Report
  • [Presentation] 長野県阿智地域に分布する梨子野川層に含まれる木片のAMS-14C年代2019

    • Author(s)
      小嶋 智・三浦千明・藤田奈津子
    • Organizer
      日本地質学会第126年学術大会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2024-01-30  

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