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Analysis of Radionuclide Transport Through Fractured Geologic Media by Percolation Theory

Research Project

Project/Area Number 02452290
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field Nuclear engineering
Research InstitutionThe University of Tokyo

Principal Investigator

SUZUKI Atsuyuki  The University of Tokyo, Faculty of Engineering, Professor, 工学部, 教授 (50011135)

Co-Investigator(Kenkyū-buntansha) OKAMOTO Tsuyoshi  The University of Tokyo, Faculty of Engineering, Technical Official, 工学部, 教務職員 (40114425)
AHN Joonhong  The University of Tokyo, Faculty of Engineering, Lecturer, 工学部, 講師 (10201906)
Project Period (FY) 1990 – 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥4,800,000 (Direct Cost: ¥4,800,000)
Fiscal Year 1992: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1991: ¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1990: ¥2,200,000 (Direct Cost: ¥2,200,000)
KeywordsRadioactive Waste Management / Geologic Disposal / Fracture Network / Percolation Theory / Disordered Media / Dispersion / Monte Carlo Simulation / 不規則媒体 / 分散 / 亀裂ネットワ-ク / ニア・フィ-ルド / パ-コレ-ション理論 / 拡散 / ランダム・ウォ-ク・シミュレ-ション
Research Abstract

Anomalous diffusion on 2-dimensional, or 3-dimensional percolation clusters were analysed by the exact enumeration method, and a generalized formulation for anomalous diffuion in terms of anomalous diffusion exponent, fractal and fracton dimensions was established. By this formulation normal Fickian diffusion can also be expressed as a special case.
Mass transport in randomly-distributed lines in a 2-dimensional space, which is considered as a simulation of geological fracture networks, was analyzed both experimentally and computationally, to investigate effects of flow in a network. In the experimental work, random-line networks were realized on photosensitive resin. Analysis of breakthrough curves reveals that dispersivity is equal to correlation length of random-line networks, and that networks of less connectivity indicates greater correlation length or dispersivity. Correlation length of well-connected networks is roughly in the same order as the length of lines distributed. In the computational work, tracer dispersion in the random-line network was simulated by the Monte Carlo method. Molecular diffusion of tracers into dead-end pores and low-flow regions in networks is found to be the key mechanism of non-Fickian behavior of tracer dispersion.
Characteristic length of electrical conductivity and permeability of porous media made by consolidating glass beads can be predicted by the original radius distribution of glass beads.

Report

(4 results)
  • 1992 Annual Research Report   Final Research Report Summary
  • 1991 Annual Research Report
  • 1990 Annual Research Report
  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] Arn,J.,et al.: "Analysis of Redionuclide Trausport Through Fracture Natvorks by Percolation Theory" Journal of Nuclear Science and Technology. 30. 433-446 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Ahn,J,et al.: "Analysis Tracer Dispersion in Flow Tmough Two-Dimeusioral Neturerk of Raudonly Distributed Leires by Percolation Theory" Eos,Trausactions,American Gerphysical Union. 73. 201 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Ahn,J.,et al.: "Radionuclile Trausport through Fracture Neturorks by Percolation Theory" 1991Joint International Waste Managament Conference,FSME,Seoul,1991. 291-298 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Ahn,J.,et al.: "Dispersion Effect on Radionuclide Trausport in Geologic Disposal System" 3rd Int'l Conberence on Nudiar Fuel Reprocissing and Wasts Management(RECOD91). 2. 1022-1027 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Ahn,J.: "Analysis of Diffusion in Fracture Netwrks of Geologic Media by Percolation Theory" 2nd Japan Int'l SAMPE Symposium. 1452-1459 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] J. Ahn, Y. Furuhama, Y. Li, and A. Suzuki: "Analysis of Radionuclide Transport Through Fracture Networks by Percolation Theory" Journal of Nuclear Science and Technology. 28(5). 433-446 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] J. Ahn, Y. Makino, and A. Suzuki: "Dispersion Effect on Radionuclide Transport in Geologic Disposal System" The Third International Conference on Nuclear Fuel Reprocessing and Waste Management (RECOD '91), Sendai. vol.2. 1022-1027 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] J. Ahn, Y. Furuhama, Y. Li, and A. Suzuki: "Radionuclide Transport Through Fracture Networks by Percolation Theory" 1991 Joint International Waste management Conference, American Society for Mechanical Engineers, Seoul. 291-298 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] J. Ahn: "Analysis of Diffusion in Fracture Networks of Geologic Media by Percolation Theory" The second Japan International SAMPE Symposium, 1991, Makuhari. 1452-1459 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] J. Ahn, K. Furukawa, T. Uchimoto, and A. Suzuki: "Analysis of Tracer Dispersion in Flow Through Two-Dimensional Network of Randomly Distributed Lines by Percolation Theory" Eos, 73, 201, Transaction, 1992 Fall Meeting, American Geophysical Union, San Francisco. (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 安、渡辺、鈴木: "ランダム線分ネットワークにおけるトレーサー分散現象のシミュレーション" 日本原子力学会春の年会予稿集. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] Ahn,J.,et al.: "Analysis of Radionuclide Trausport Through Fracture NetworK by Percolation Theory" Journal of Nuclear Science and Technology. 30. 433-446 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] "Experimental Studies of Tracer Dispersion in Flow Through TwoーDimensionalNetwerks of Random Lines" Water Resources Research.

    • Related Report
      1991 Annual Research Report
  • [Publications] Ahn,J.,et al: "Analysis of Radionuclide Transport Through Fracture Networks by Percolation Theory" Journal of Nuclear Science and Technology. 30. (1991)

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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