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Boundary model test of bentonite based buffer in HLW disposal pit and self-sealing evaluation

Research Project

Project/Area Number 18H01534
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 22030:Geotechnical engineering-related
Research InstitutionWaseda University

Principal Investigator

小峯 秀雄  早稲田大学, 理工学術院, 教授 (90334010)

Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2021: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2020: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Keywords高レベル放射性廃棄物地層処分 / ベントナイト / 膨潤 / 自己シール性 / 模型実験
Outline of Annual Research Achievements

本研究は,高レベル放射性廃棄物地層処分に工学的に資することを念頭に,バリア材としてのキーコンポーネントであるベントナイト系緩衝材に求められる技術要件の自己シール性について定量評価することを目的としている.本研究では,上端面吸水による一次元膨潤変形試験,膨潤圧試験と自己シール性測定実験を実施し,得られた各種データベースに基づき自己シール性南野定量評価方法を提案した.具体的に得られた研究成果は以下の通りである.
1)膨潤変形試験では,上端面吸水による一次元膨潤変形試験では最大膨潤変形率は既往研究とおおむね一致した.また含水比・乾燥密度分布において,吸水面からの距離が小さい箇所では試験開始直後から含水比および乾燥密度に大きな変化が生じ,測定期間が長くなるに従い吸水面からの距離が大きい箇所でも変化が生じた.一定期間経過後,供試体のすべての箇所で試験後含水比は約150 %に,試験後乾燥密度は約0.6 Mg/m3になった.
2)自己シール性測定実験では,発生圧力の発現に4つの段階が生じ,それぞれ隙間幅や吸水方法の影響がみられた.また含水比・乾燥密度分布において,測定期間による影響は小さかったが,測定期間が長い供試体ほど供試体内の含水比・乾燥密度が一様になる傾向が若干みられた.また隙間を設置した箇所の変化が著しい傾向があった.
3)膨潤変形および自己シール時の水分拡散係数は1×10-8~4×10-8 m2/sであり,既往研究と比較して大きな値となった.これは吸水方法による影響と考えられる.
4)以上の成果に基づき,ベントナイト系緩衝材の自己シール性能の定量評価方法を構築し提案した.
本研究で得られた成果は,自己シール性の観点からのベントナイト系緩衝材の設計に寄与できると考えられる.

Research Progress Status

令和3年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和3年度が最終年度であるため、記入しない。

Report

(4 results)
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report

Research Products

(40 results)

All 2022 2021 2020 2019 2018 Other

All Journal Article (15 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 15 results,  Open Access: 6 results) Presentation (20 results) (of which Int'l Joint Research: 7 results,  Invited: 2 results) Remarks (5 results)

  • [Journal Article] On methods to measure cation exchange capacity and amounts of leached cations of bentonites2022

    • Author(s)
      SHIRAKAWABE Takumi、WANG Hailong、MORODOME Shoji、KOMINE Hideo
    • Journal Title

      Japanese Geotechnical Journal

      Volume: 17 Issue: 1 Pages: 61-71

    • DOI

      10.3208/jgs.17.61

    • NAID

      130008166316

    • ISSN
      1880-6341
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of specimen thickness on apparent swelling pressure evolution of compacted bentonite2022

    • Author(s)
      Wang Hailong、Ruan Kunlin、Harasaki Satoru、Komine Hideo
    • Journal Title

      Soils and Foundations

      Volume: 62 Pages: 101099-101099

    • DOI

      10.1016/j.sandf.2021.101099

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] QUANTITATIVE ANALOGISM ON MONTMORILLONITE MINERAL LAYERS FILTRATION ABILITY AND ITS ENGINEERING USE2021

    • Author(s)
      KOMINE Hideo
    • Journal Title

      J. JSCE Ser. C

      Volume: 77 Issue: 3 Pages: 296-301

    • DOI

      10.2208/jscejge.77.3_296

    • NAID

      130008090627

    • ISSN
      2185-6516
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Cation Filtration of Montmorillonite on Hydraulic Conductivities of Some Bentonites in Artificial Seawater2021

    • Author(s)
      Komine Hideo
    • Journal Title

      Journal of Geotechnical and Geoenvironmental Engineering

      Volume: 147 Pages: 06021002-06021002

    • DOI

      10.1061/(asce)gt.1943-5606.0002513

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Reversibility of micro and macrostructure in compacted bentonite under chemo-mechanical couplings2021

    • Author(s)
      Ruan Kunlin、Sun De'an、Fu Xianlei、Wang Hailong、Komine Hideo、Ito Daichi
    • Journal Title

      JGS Special Publication

      Volume: 9 Issue: 2 Pages: 20-25

    • DOI

      10.3208/jgssp.v09.cpeg021

    • NAID

      130008103281

    • ISSN
      2188-8027
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A swelling pressure cell for X-ray diffraction test2021

    • Author(s)
      Wang Hailong、Komine Hideo、Gotoh Takahiro
    • Journal Title

      Geotechnique

      Volume: 1 Pages: 1-12

    • DOI

      10.1680/jgeot.20.00005

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 締固めたベントナイトの膨潤圧特性の究明に向けたX 線回折を用いた実験手法の開発2021

    • Author(s)
      王海龍 , 小峯秀雄 , 伊藤大知 , 後藤隆弘
    • Journal Title

      地盤工学会誌

      Volume: 69(1) Pages: 48-51

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] ベントナイト原鉱石の測定結果に基づく膨潤特性における膠結作用の影響評価2020

    • Author(s)
      伊藤大知,小峯秀雄
    • Journal Title

      土木学会論文集C(地圏工学)

      Volume: 76(3) Pages: 295-305

    • NAID

      130007906230

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hydration and dehydration of water of bentonite: A solid-state 1H magic-angle spinning NMR study2020

    • Author(s)
      Wang Hailong, Shibue Toshimichi, Komine Hideo
    • Journal Title

      Chemical Physics

      Volume: 536 Pages: 110796-110796

    • DOI

      10.1016/j.chemphys.2020.110796

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 3.Scale-model test for disposal pit of high-level radioactive waste and theoretical evaluation on self-sealing of bentonite-based buffers2019

    • Author(s)
      Hideo Komine
    • Journal Title

      Canadian Geotechnical Journal

      Volume: 00 Pages: 1-8

    • DOI

      10.1139/cgj-2018-0805

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 4.Movement of water in compacted bentonite and its relation with swelling pressure2019

    • Author(s)
      H.Wang T.Shirakawabe H.Komine D.Ito et al.
    • Journal Title

      Canadian Geotechnical Journal

      Volume: 00 Pages: 1-12

    • DOI

      10.1139/cgj-2019-0219

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Development of analytical model for hydro-chemo-mechanical behavior of unsaturated bentonite barrier2019

    • Author(s)
      Shun Uchida, Hideo Komine
    • Journal Title

      Proceedings of 2nd International Conference on Environmental Geotechnology, Recycled Waste Materials and Sustainable Engineering

      Volume: -

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 廃炉地盤工学の創生2018

    • Author(s)
      小峯秀雄
    • Journal Title

      原子力バックエンド研究

      Volume: - Pages: 85-90

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Evaluating Influence of Cementation in Bentonite Buffer Material Based on the Swelling Properties of Bentonite Ore2018

    • Author(s)
      Ito, D., Komine, H., Morodome, Sekiguchi, T. and Miura, G.
    • Journal Title

      Proceedings of ICEG2018

      Volume: - Pages: 97-104

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Applicability of Sedimentary Rock in Hydraulic Barrier System Construction2018

    • Author(s)
      Iso, S., Motoshima, T and Komine, H.
    • Journal Title

      Proceedings of ICEG2018

      Volume: - Pages: 81-88

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] 締固めたベントナイトの膨潤圧および自己シール性に及ぼす吸水方向の相違の影響2021

    • Author(s)
      18.山本有雅,伊藤大知,小峯秀雄,後藤茂,王海龍,関口高志,北原慎也
    • Organizer
      第56回地盤工学研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 種々の拘束条件におけるベントナイト原鉱石の拘束圧―乾燥密度関係の評価2021

    • Author(s)
      21.伊藤大知,王海龍,小峯秀雄
    • Organizer
      第56回地盤工学研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 限定湿潤下で異なる溶液によって飽和したナトリウム-ベントナイトの膨潤圧と水拡散係数2021

    • Author(s)
      23.阮坤林,伊藤大知,小峯秀雄,王海龍
    • Organizer
      土木学会全国大会第76回年次学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 締固めたベントナイトの透水係数測定に向けた厚さ2mmの供試体を用いた変水位透水試験の適用性評価2021

    • Author(s)
      27.伊藤大知,貞松暁大,小峯秀雄,王海龍
    • Organizer
      土木学会全国大会第76回年次学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 締固めたベントナイトの自己シール性に及ぼす吸水方向および隙間幅の影響の実験的調査2021

    • Author(s)
      30.山本有雅,小峯秀雄,王海龍,後藤茂,伊藤大知,関口高志,北原慎也
    • Organizer
      土木学会全国大会第76回年次学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Reversibility of micro and macrostructure in compacted bentonite under chemo-mechanical couplings2021

    • Author(s)
      Kunlin RUAN, De'an SUN, Xianlei FU, Hailong WANG, Hideo KOMINE
    • Organizer
      3rd International Symposium on Coupled Phenomena in Environmental Geotechnics
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Influence of bentonite type and producing method on hydraulic conductivity of sand and bentonite mixture2020

    • Author(s)
      Tomonori Sakita , Hideo Komine , Atsuo Yamada , Hailong Wang , Shigeru Goto
    • Organizer
      E3S Web of Conferences
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Experimental study on effect by cementation on self-sealing capability of bentonite buffer material2020

    • Author(s)
      Daichi Ito, Hideo Komine, Hailong Wang
    • Organizer
      E3S Web of Conferences
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ベントナイト系緩衝材・埋戻し材の膨潤特性理論評価式・透水 係数理論評価式におけるモンモリロナイト結晶層間の初期値に 関する分析的検証2020

    • Author(s)
      小峯秀雄
    • Organizer
      第55回地盤工学研究発表会
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] モンモリロナイト底面間隔から観た ベントナイト原鉱石の膨潤圧における膠結作用の影響評価2020

    • Author(s)
      伊藤大知,小峯秀雄,王海龍,後藤茂
    • Organizer
      令和2年度土木学会全国大会第75回年次学術講演会
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 短期間の温度履歴を付与したベントナイトの吸水挙動に及ぼす影響に関する推察2019

    • Author(s)
      白河部匠,小峯秀雄ほか
    • Organizer
      第13回環境地盤工学シンポジウム
    • Related Report
      2019 Annual Research Report
  • [Presentation] Geotechnical Engineering for High-Level Radioactive Waste Disposal Project in Japan2019

    • Author(s)
      Hideo Komine
    • Organizer
      Seminar on Isolation Technology for Significant Power Plant Structure and Engineering Behavior of Buffer in Deep Geological Repository for Waste, Shanghai University, China. 2019.05.
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Geotechnical Engineering for High-Level Radioactive Waste Disposal Project in Japan2019

    • Author(s)
      Hideo Komine
    • Organizer
      GER2019 at Chulalongkorn University,Thailand, 2019/11/28
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 固結したベントナイト系緩衝材の自己シール性能の維持に関する一考察2019

    • Author(s)
      伊藤大知,小峯秀雄ほか
    • Organizer
      第54 回地盤工学研究発表会(さいたま市)
    • Related Report
      2019 Annual Research Report
  • [Presentation] ベント ナイ原鉱石の 膨潤特性 膨潤特性 測定結果に基づく緩衝材 への年代変化 に関する推察2019

    • Author(s)
      伊藤大知,小峯秀雄
    • Organizer
      令和元年度土木学会全国大会第74回年次学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 生成年代の異なるベントナイト原鉱石の膨潤変形特性に基づく膠結作用の定量評価2018

    • Author(s)
      伊藤大知,小峯秀雄,諸留章二,関口高志,三浦玄太
    • Organizer
      第53回地盤工学研究発表会(高松)
    • Related Report
      2018 Annual Research Report
  • [Presentation] ベントナイト供試体の吸水に伴う鉛直方向および側方の発生圧力の同時測定2018

    • Author(s)
      市川雄太,伊藤大知,小峯秀雄,関口高志,三浦玄太
    • Organizer
      第53回地盤工学研究発表会(高松)
    • Related Report
      2018 Annual Research Report
  • [Presentation] 締固めた粒状ベントナイトの吸水に伴う鉛直方向および側方の発生応力同時測定2018

    • Author(s)
      市川雄太,小峯秀雄,伊藤大知,関口高志,三浦玄太
    • Organizer
      土木学会平成30年度年次大会第73回年次学術講演会,北海道
    • Related Report
      2018 Annual Research Report
  • [Presentation] 200℃以上の温度履歴を与えたベントナイトの含水比回復挙動2018

    • Author(s)
      白河部匠,小峯秀雄,伊藤大知,山本修一
    • Organizer
      第53回地盤工学研究発表会(高松)
    • Related Report
      2018 Annual Research Report
  • [Presentation] 締固めた粉体状ベントナイトの水分移動特性に及ぼす 200℃以上の温度履歴の影響調査2018

    • Author(s)
      白河部匠,小峯秀雄,伊藤大知,山本修一
    • Organizer
      土木学会平成30年度年次大会第73回年次学術講演会,北海道
    • Related Report
      2018 Annual Research Report
  • [Remarks] 早稲田大学 地盤工学研究室

    • URL

      http://www.f.waseda.jp/hkomine/

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
  • [Remarks] 早稲田大学地盤工学研究室

    • URL

      http://www.f.waseda.jp/hkomine/

    • Related Report
      2019 Annual Research Report
  • [Remarks] WOI'20

    • URL

      http://www.f.waseda.jp/hkomine/Topics/2019/99_WOI'20Poster.pdf

    • Related Report
      2019 Annual Research Report
  • [Remarks] WOI'19

    • URL

      http://www.f.waseda.jp/hkomine/Topics/2019/99_WOI'19Poster.pdf

    • Related Report
      2019 Annual Research Report
  • [Remarks] http://www.f.waseda.jp/hkomine/

    • Related Report
      2018 Annual Research Report

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Published: 2018-04-23   Modified: 2022-12-28  

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