DLVO理論に基づく地下水中でのモンモリロナイトゲルからの粒子の分散に関する評価 Evaluation of Particle Release from Montmorillonite Gel by Flowing Groundwater Based on the DLVO Theory

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著者

    • 黒澤 進 KUROSAWA Susumu
    • 日本原子力研究開発機構 地層処分研究開発部門 Geological Isolation Research and Development Directorate, Japan Atomic Energy Agency
    • 長崎 晋也 NAGASAKI Shinya
    • 東京大学大学院工学系研究科原子力専攻 Nuclear Professional School, Graduate School of Engineering, The University of Tokyo
    • 田中 知 TANAKA Satoru
    • 東京大学大学院工学系研究科システム量子工学専攻 Department of Quantum Engineering and Systems Sciences, Graduate School of Engineering, The University of Tokyo

抄録

  Theoretical study has been performed to clarify the ability of colloid release form the montmorillonite gel by the flowing groundwater. Evaluation of montmorillonite colloidal particles release from the bentonite buffer material is important for the performance assessment of radioactive waste disposal because the colloids may influence the radionuclide transport. In this study, the minimum groundwater flow rate required to tear off montmorillonite particles from surface of bentonite buffer was estimated from the shear stress on the gel front, which was calculated by the DLVO theory. The estimated shear force was converted to corresponding groundwater velocity by using Stoke's equation. The results indicated that groundwater velocity in a range of about 10<sup>−5</sup> to 10<sup>−4</sup> m/s would be necessary to release montmorillonite particles. This range is higher than the groundwater flow velocity found generally in deep geological media in Japan. This study suggests that the effect of montmorillonite particles release from the bentonite buffer on radionuclide transport is likely to be negligible in the performance assessment of high-level radioactive waste geological disposal.<br>

収録刊行物

  • 日本原子力学会和文論文誌 = Transactions of the Atomic Energy Society of Japan  

    日本原子力学会和文論文誌 = Transactions of the Atomic Energy Society of Japan 6(2), 205-213, 2007-06-25 

    Atomic Energy Society of Japan

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各種コード

  • NII論文ID(NAID)
    10018763693
  • NII書誌ID(NCID)
    AA11643165
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    13472879
  • NDL 記事登録ID
    8884329
  • NDL 雑誌分類
    ZN36(科学技術--原子力工学・工業)
  • NDL 請求記号
    Z74-C788
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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