• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Study of technique for ensuring long-term integrity of rock mass and and environmental protection by mineral precipitation

Research Project

Project/Area Number 19K04596
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 22030:Geotechnical engineering-related
Research InstitutionKyoto University

Principal Investigator

Nara Yoshitaka  京都大学, 工学研究科, 准教授 (00466442)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords岩石 / セメント系材料 / き裂 / 空隙 / 鉱物析出 / 透水係数 / き裂修復 / 炭酸水 / 岩盤 / 透水試験 / モルタル / 破壊 / 透水性 / 固体材料 / 遮蔽性 / 強靭化
Outline of Research at the Start

岩盤や構造物の長期安定性の確保には,鉱物析出による持続可能なき裂修復を固体材料で生じさせて,材料を強靭化させる技術を創出することが必要となる。そこで,岩盤や構造物の長期安定性を確保するシステムを構築することを最大の目的とし,ここでは,鉱物析出によるき裂修復を持続可能な形で生じさせて材料を強靭化させる技術を創出し,岩盤・構造物の長期安定性確保に生かすことを目的とする。

Outline of Final Research Achievements

To ensure the safety of a rock mass and structures, the tensile stress should be avoided. However, if the crack sealing and healing happen, the long-term integrity of a rock mass and structures can be ensured. In this stydy, it was planned to create the technique to ensure the mechanical integrity of rock and cementitious material using aqueous environmental condition where the concentration of ions are high. Especially, using rock and cementitious material, measurement of permeability was conducted to investigate the change of the hydraulic conductivity by the crack closure. It was clarified that the crack closure occurred by the mineral precipitation on the cracks and pores, which resulted in the decrease of the permeability.

Academic Significance and Societal Importance of the Research Achievements

岩石やセメント系材料内部のき裂や空隙が修復されていることから,本研究において示した現象は,材料の強靭化にもつながるものと考えられる。特に,カルシウムイオンや炭酸イオンが豊富に存在する水中環境下でカルシウム化合物が析出しき裂閉塞が起こることを見出しているため,カルシウムイオンが豊富な水中環境は,岩盤や構造物の長期安定性の確保に大きく貢献でき,放射性廃棄物処分のような岩盤工学プロジェクトの安全性確保に好都合であると考えられる。

Report

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

    (26 results)

All 2022 2021 2020 2019

All Journal Article (9 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 9 results,  Open Access: 3 results) Presentation (17 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Journal Article] Permeability Change in Macro-Fractured Granite Using Water Including Clay2022

    • Author(s)
      奈良禎太, 加藤昌治, 佐藤努, 河野勝宣, 佐藤稔紀
    • Journal Title

      Journal of MMIJ

      Volume: 138 Issue: 4 Pages: 44-50

    • DOI

      10.2473/journalofmmij.138.44

    • ISSN
      1881-6118, 1884-0450
    • Year and Date
      2022-04-28
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Calculation of P-Wave Velocity in Sandstones with Different Pore Size Distributions Using Digital Rock Model without Segmentation2022

    • Author(s)
      石塚師也, 林為人, 神谷奈々, 奈良禎太
    • Journal Title

      Journal of the Society of Materials Science, Japan

      Volume: 71 Issue: 3 Pages: 235-242

    • DOI

      10.2472/jsms.71.235

    • ISSN
      0514-5163, 1880-7488
    • Year and Date
      2022-03-15
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of Reinforcing Steel Fiber on Permeability of High Strength and Ultra Low Permeability Concrete2022

    • Author(s)
      酒本琴音, 加藤昌治, 石井祐輔, 胡桃澤清文, 奈良禎太
    • Journal Title

      Journal of the Society of Materials Science, Japan

      Volume: 71 Issue: 3 Pages: 228-234

    • DOI

      10.2472/jsms.71.228

    • ISSN
      0514-5163, 1880-7488
    • Year and Date
      2022-03-15
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Importance of Temperature Control in Surrounding Environment during Permeability Test for Measuring Hydraulic Constants of Rock2021

    • Author(s)
      M. Kato, Y. Nara, D. Fukuda, M. Kohno, Toshinori Sato, Tsutomu Sato, M. Takahashi
    • Journal Title

      Journal of the Society of Materials Science, Japan

      Volume: 70 Issue: 4 Pages: 300-306

    • DOI

      10.2472/jsms.70.300

    • NAID

      130008027602

    • ISSN
      0514-5163, 1880-7488
    • Year and Date
      2021-04-15
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Analysis of capillary water imbibition in sandstone via a combination of nuclear magnetic resonance imaging and numerical DEM modelling2021

    • Author(s)
      T.F. Fu, T. Xu, M. Heap, P. Meredith, T.H. Yang, T. Mitchell, Y. Nara
    • Journal Title

      Engineering Geology

      Volume: 285 Pages: 106070-106070

    • DOI

      10.1016/j.enggeo.2021.106070

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A meso-mechanical approach to time-dependent deformation and fracturing of partially saturated sandstone2021

    • Author(s)
      T.F. Fu, T. Xu, P.G. Meredith, T.M. Mitchell, M.J. Heap, Y. Nara
    • Journal Title

      International Journal of Rock Mechanics and Mining Sciences

      Volume: 145 Pages: 104840-104840

    • DOI

      10.1016/j.ijrmms.2021.104840

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Precise Permeability Measurement for High Strength and Ultra Low Permeability Concrete under Controlled Temperature2020

    • Author(s)
      M. Kato, Y. Nara and K. Shibuya
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 61 Issue: 11 Pages: 2134-2138

    • DOI

      10.2320/matertrans.Z-M2020846

    • NAID

      130007930269

    • ISSN
      1345-9678, 1347-5320
    • Year and Date
      2020-11-01
    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Development of a numerical simulator for 3D analysis of dynamic fracture processes of rocks based on a hybrid FEM-DEM using an extrinsic cohesive zone model2020

    • Author(s)
      D. Fukuda, E. Nihei, S.H. Cho, S. Oh, Y. Nara, J. Kodama and Y. Fujii
    • Journal Title

      Materials Transactions

      Volume: 61 Issue: 9 Pages: 1767-1774

    • DOI

      10.2320/matertrans.z-m2020833

    • NAID

      130007890437

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Time-dependent deformation and fracture evolution around underground excavations2020

    • Author(s)
      T.F. Fu, T. Xu, P.L.P Wasantha, T.H. Yang, Y. Nara and Z. Heng
    • Journal Title

      Geomatics, Natural Hazards and Risk

      Volume: 11 Issue: 1 Pages: 2615-2633

    • DOI

      10.1080/19475705.2020.1856202

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 岩石のサブクリティカルき裂進展に及ぼす周辺環境の影響2022

    • Author(s)
      奈良禎太
    • Organizer
      資源・素材学会令和4年度春季大会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 岩石とコンクリートにおける透 水係数の有効封圧依存性2022

    • Author(s)
      酒本琴音, 加藤昌治, 石井祐輔, 胡桃澤清文, 奈良禎太
    • Organizer
      資源・素材学会令和4年度春季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 凝灰岩を用いた室内透水試験2022

    • Author(s)
      桑原彰吾, 鎌田健人, 柏谷公希, 奈良禎太
    • Organizer
      日本材料学会第71期学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 北海道幌延地域の泥岩層における炭酸水注入実験2021

    • Author(s)
      鎌田健人, 奈良禎太, 松井裕哉, 尾崎裕介, 藤井宏和, 趙越
    • Organizer
      日本材料学会第70期学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 岩石の透水試験における温度制御の重要性2021

    • Author(s)
      加藤昌治, 奈良禎太
    • Organizer
      日本材料学会第70期学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] コロナ禍における国際共同研究ネットワークの推進-サブクリティカルき裂進展の 研究を通じて-2021

    • Author(s)
      奈良禎太
    • Organizer
      資源・素材 2021(札幌)
    • Related Report
      2021 Annual Research Report
  • [Presentation] 北海道幌延地域の原位置岩盤における炭酸水注入実験2021

    • Author(s)
      鎌田健人, 奈良禎太, 柏谷公希, 多田洋平, 藤井宏和, 趙越, 松井裕哉, 尾崎裕介
    • Organizer
      資源・素材学会関西支部 第18回若手研究者・学生のための研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 凝灰岩の透水係数測定2021

    • Author(s)
      桑原彰吾, 鎌田健人, 奈良禎太
    • Organizer
      資源・素材学会関西支部 第18回若手研究者・学生のための研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Numerical analysis of anisotropic influence of of mode-I fracture toughness under dynamic loading for rock using GPGPU-based three-dimensional combined finite-discrete element method (FDEM)2021

    • Author(s)
      G.J. Min, D. Fukuda, S.W. Oh, Y. Nara, H. Liu, S.H. Cho
    • Organizer
      ARMS11
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 海水中に保存した破壊した高強度高緻密コンクリートの透水係数2021

    • Author(s)
      前崎智史,奈良禎太,加藤昌治,渋谷和俊
    • Organizer
      第15回岩の力学国内シンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] 破壊した幌延泥岩の透水係数測定2021

    • Author(s)
      鎌田健人,奈良禎太,松井裕哉,尾崎裕介
    • Organizer
      第15回岩の力学国内シンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] 各種粘土鉱物を充填した巨視き裂を含む岩質材料の透水性2021

    • Author(s)
      浅野匡希,河野勝宣,西村強,奈良禎太,加藤昌治
    • Organizer
      第15回岩の力学国内シンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] 海水環境下における破壊した高強度高緻密コンクリートの透水係数測定2020

    • Author(s)
      前崎智史,奈良禎太,加藤昌治,渋谷和俊
    • Organizer
      日本材料学会第69期学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] 巨視亀裂を導入した高強度高緻密コンクリートの透水係数の変化2020

    • Author(s)
      前崎智史,奈良禎太,木戸隆之祐,加藤昌治,渋谷和俊
    • Organizer
      資源・素材学会関西支部 第17 回「若手研究者・学生のための研究発表会」
    • Related Report
      2020 Research-status Report
  • [Presentation] 幌延地域の泥岩層における原位置透水試験2020

    • Author(s)
      鎌田健人,奈良禎太,藤井宏和,趙越,松井裕哉,尾崎裕介
    • Organizer
      資源・素材学会関西支部 第17 回「若手研究者・学生のための研究発表会」
    • Related Report
      2020 Research-status Report
  • [Presentation] Effect of calcium ion concentration on subcritical crack growthin sedimentary rock2019

    • Author(s)
      H. Takeda, Y. Nara
    • Organizer
      5th ISRM Young Scholars' Symposium on Rock Mechanics and InternationalSymposium on Rock Engineering for Innovative Future
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Influence of pore sealing by calcium compoundson permeability in sandstone2019

    • Author(s)
      M. Nishiguchi, Y. Nara, K. Kashiwaya
    • Organizer
      5th ISRM Young Scholars' Symposiumon Rock Mechanics and International Symposium on Rock Engineering for InnovativeFuture (YSRM 2019 and REIF 2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2019-04-18   Modified: 2023-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi