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Evaluation of radioactive waste reservoir safety based on the elucidation of fluid flow mechanism

Research Project

Project/Area Number 17F17382
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section外国
Research Field Earth system and resources engineering
Research InstitutionNagasaki University

Principal Investigator

蒋 宇静  長崎大学, 工学研究科, 教授 (50253498)

Co-Investigator(Kenkyū-buntansha) LIU RICHENG  長崎大学, 工学研究科, 外国人特別研究員
Project Period (FY) 2017-11-10 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 2019: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2018: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2017: ¥600,000 (Direct Cost: ¥600,000)
Keywords岩盤亀裂 / 透水試験 / 水理物質移行機構 / 地層貯留安全性 / 交差亀裂 / 亀裂ネットワーク / 非線形的流動特性 / 臨界動水勾配 / 表面ラフネス / 数値シミュレーション / 空間分布特性 / フラクタル特性 / 浸透流
Outline of Annual Research Achievements

今年度は、前年度まで解明した亀裂接触部における熱・水・応力(破壊)・化学連成評価モデルを亀裂ネットワークモデルに導入し、接触部の破壊がモデル全体の水理物質移行特性に与える影響を詳細に考察した。具体的には、下記に示す有意な成果が得られた。
(1)三次元亀裂ネットワークモデルを制作し、応力と水力を与えて、三次元モデルに通じての流量を観測した。当時に、CTを用いて亀裂の分布状況と接触部の破壊状態を明らかにした。(2)流体の温度を変えて、浸透係数の変化を観測した。(3)酸性流体を用いて、浸透係数及び接触部の破壊状態に与える影響を分析し、熱・水・応力(破壊)・化学連成作用を解明した。最後に、亀裂表面ラフネスと透水係数との関係式及びフラクタル次元による亀裂の空間分布特性の評価手法を一体化し、より高度な水理物質移行特性評価モデルを提案した。

Research Progress Status

令和元年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和元年度が最終年度であるため、記入しない。

Report

(3 results)
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (10 results)

All 2020 2019 2018 2017

All Journal Article (8 results) (of which Int'l Joint Research: 8 results,  Peer Reviewed: 8 results,  Open Access: 5 results) Presentation (2 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] A numerical study of shear-induced evolutions of geometric and hydraulic properties of self-affine rough-walled rock fractures2020

    • Author(s)
      Richeng Liu, Na Huang, Yujing Jiang, Hongwen Jing, Liyuan Yu
    • Journal Title

      International Journal of Rock Mechanics and Mining Sciences

      Volume: 127 Pages: 104211-104211

    • DOI

      10.1016/j.ijrmms.2020.104211

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Three-dimensional double-rough-walled modeling of fluid flow through self-affine shear fractures2020

    • Author(s)
      Richeng Liu, Ming He, Na Huang, Yujing Jiang, Liyuan Yu
    • Journal Title

      Journal of Rock Mechanics and Geotechnical Engineering

      Volume: 12 Pages: 41-49

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Experimental and numerical studies of the hydraulic properties of three-dimensional fracture networks with spatially distributed apertures2019

    • Author(s)
      Na Huang, Yujing Jiang, Richeng Liu, Bo Li
    • Journal Title

      Rock Mechanics and Rock Engineering

      Volume: 52 Issue: 11 Pages: 4731-4746

    • DOI

      10.1007/s00603-019-01869-7

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A novel three-dimensional discrete fracture network model for investigating the role of aperture heterogeneity on fluid flow through fractured rock masses2019

    • Author(s)
      Na Huang, Yujing Jiang, Richeng Liu, Bo Li, Satoshi Sugimoto
    • Journal Title

      International Journal of Rock Mechanics and Mining sciences

      Volume: 116 Pages: 25-37

    • DOI

      10.1016/j.ijrmms.2019.03.014

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Nonlinear flow characteristics of a system of two intersecting fractures with different apertures2018

    • Author(s)
      Richeng Liu, Yujing Jiang, Hongwen Jing, Liyuan Yu
    • Journal Title

      Processes

      Volume: 6 Issue: 7 Pages: 1-10

    • DOI

      10.3390/pr6070094

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A predictive model correlating permeability to two-dimensional fracture network parameters2018

    • Author(s)
      Liu Richeng、Zhu Tantan、Jiang Yujing、Li Bo、Yu Liyuan、Du Yan、Wang Yingchao
    • Journal Title

      Bulletin of Engineering Geology and the Environment

      Volume: - Issue: 3 Pages: 1589-1605

    • DOI

      10.1007/s10064-018-1231-8

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A numerical approach for assessing effects of shear on equivalent permeability and nonlinear flow characteristics of 2-D fracture networks2018

    • Author(s)
      Richeng Liu, Bo Li, Yujing Jiang, Liyuan Yu
    • Journal Title

      Advances in Water Resources

      Volume: 111 Pages: 289-300

    • DOI

      10.1016/j.advwatres.2017.11.022

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Quantitative Estimates of Normalized Transmissivity and the Onset of Nonlinear Fluid Flow Through Rough Rock Fractures2017

    • Author(s)
      Richeng Liu, Liyuan Yu, Yujing Jiang
    • Journal Title

      Rock Mechanics and Rock Engineering

      Volume: 50 Issue: 4 Pages: 1063-1071

    • DOI

      10.1007/s00603-016-1147-1

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Numerical simulations of shear-induced nonlinear flow properties of single three-dimensional rock fractures2019

    • Author(s)
      Richeng Liu
    • Organizer
      China Rock 2019 Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Experimental study on solute removal through a large-scale fracture plane2018

    • Author(s)
      R. Liu, Y. Jiang
    • Organizer
      The 10th Asian Rock Mechanics Symposium (ARMS10), Singapore
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research

URL: 

Published: 2017-11-13   Modified: 2024-03-26  

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