Basic Information

Faculty

• Faculty of Engineering

Professional Memberships

• From Jan. 2020, To Present

  European Geosciences Union
• American Geophysical Union
• European Association of Geoscientists and Engineers
• International Society for Rock Mechanics
• The Japanese Commitiiee for Rock Mechanics
• JAPAN SOCIETY OF ENGINEERING GEOLOGY
• JAPAN SOCIETY OF CIVIL ENGINEERS
• THE SOCIETY OF MATERIALS SCIENCE, JAPAN
• THE MINING AND MATERIALS PROCESSING INSTITUTE OF JAPAN

Academic Degree

• 修士（工学）(北海道大学)
• 博士（工学）(北海道大学)

Research History

• From Apr. 2016

  Kyoto University, Graduate School of Engineering, Associate Profesor
• From Apr. 2014, To Mar. 2016

  Tottori University, Graduate School of Engineering, Associate Professor
• From Apr. 2011, To Mar. 2014

  Kyoto University, Graduate School of Engineering, Assistant Professor
• From Apr. 2008, To Mar. 2011

  Hokkaido University, Graduate School of Enginering, Postdoctoral Research Fellow of the Japan Society for the Promotion of Science
• From Sep. 2005, To Mar. 2008

  Hokkaido University, Graduate School of Engineering, 21st Century Center of Excellence Postdoctoral Fellow
• From Apr. 2004, To Aug. 2005

  Hokkaido University, Graduate School of Engineering, Postdoctoral Fellow

Language of Instruction

• English

ID,URL

• ORCID ID

  0000-0002-5717-1420

• J-Global ID

  201401064009345740

• Researcher ID

  I-2486-2019

• External link

  https://www.researchgate.net/profile/Yoshitaka_Nara/

researchmap URL

• https://researchmap.jp/ygnr0509

Research

Research Topics, Overview of the research

• Research Topics

  Subcritical crack growth in rock, Permeability of rock, Elastic wave propagation in rock, Fracture sealing in rock-like materials

• Overview of the research

  Long-term stability is reqyured for structures in a rock mass. To ensure the stabiulity of structures, information about time-dependent fracturing in rock is essential. In addition, information about permeability and crack closure in rock-like materials is also important for the long-term stability of structures in a rock mass and radioactive waste disposal. For these purposes, I am conducting studies about crack growth, peameability, elastic wave velocity and crack closure in rock and cementitious materials.

Research Interests

• crack
• humidity
• temperature
• water
• elastic wave
• permeability
• rock

Research Areas

• Energy, Earth resource engineering, energy science

Papers

• Subcritical crack growth in rocks under water environment

  Yoshitaka Nara; Hirofumi Kurata; Katsuhiko Kaneko

  Fracture of Nano and Engineering Materials and Structures - Proceedings of the 16th European Conference of Fracture, 2006

  
• Effect of the relative humidity on subcritical crack growth in sandstone

  Y. Nara; T. Yoneda; K. Kaneko

  71st European Association of Geoscientists and Engineers Conference and Exhibition 2009: Balancing Global Resources. Incorporating SPE EUROPEC 2009, 2009

  
• Progressive fracturing in alluvial clasts

  Uri Shaanan; Amit Mushkin; Monica Rasmussen; Amir Sagy; Philip Meredith; Yoshitaka Nara; Russell Keanini; Martha-Cary Eppes

  Geological Society of America Bulletin, 01 Mar. 2024, Peer-reviewed

  
• Calculation of P-Wave Velocity in Sandstones with Different Pore Size Distributions Using Digital Rock Model without Segmentation

  Kazuya Ishitsuka; Weiren Lin; Nana Kamiya; Yoshitaka Nara

  MATERIALS TRANSACTIONS, 2022

  
• Time-dependent deformation analysis of the surrounding rock mass around a tunnel

  Teng-Fei Fu; Tao Xu; Yoshitaka Nara; Yan-Chao Xue; Zhen Heng; Yang Yuan

  IOP Conference Series: Earth and Environmental Science, 11 Nov. 2020

  
• AE monitoring of hydraulic fracturing experiments conducted using CO2 and water

  T. Ishida; Y. Nagaya; S. Inui; K. Aoyagi; Y. Nara; Y. Chen; Q. Chen; Y. Nakayama

  ISRM International Symposium - EUROCK 2013, 2013

  
• Experimental study of subcritical crack growth in brittle materials

  Y. Nara; M. Takada; K. Kaneko; H. Owada; T. Hiraishi

  ROCK MECHANICS: MEETING SOCIETY'S CHALLENGES AND DEMANDS, VOLS 1 AND 2, 2007, Peer-reviewed

  
• Influence of pore sealing by calcium compounds on permeability in sandstone

  Masataka Nishiguchi; Yoshitaka Nara; Koki Kashiwaya

  5th ISRM Young Scholars' Symposium on Rock Mechanics and International Symposium on Rock Engineering for Innovative Future, YSRM 2019, 2019

  
• Change of permeability in high-strength and ultra-low-permeability concrete in seawater

  Satoshi Maezaki; Yoshitaka Nara; Masaji Kato; Kazutoshi Shibuya

  5th ISRM Young Scholars' Symposium on Rock Mechanics and International Symposium on Rock Engineering for Innovative Future, YSRM 2019, 2019

  
• Influence of surrounding environment on subcritical crack growth in marble in air

  Yuki Nishida; Yoshitaka Nara; Tsuyoshi Ishida; Katsuhiko Kaneko

  ISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014, 2014

  
• Evaluation of principal stress directions and ratio in underground from P-wave velocity measurement in granite

  Yoshitaka Nara; Harumi Kato; Katsuhiko Kaneko; Koji Matsuki

  ISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014, 2014

  
• AE monitoring of hydraulic fracturing experiments in granite blocks using supercritical CO<inf>2</inf>, water and viscous oil

  S. Inui; T. Ishida; Y. Nagaya; Y. Nara; Y. Chen; Q. Chen

  48th US Rock Mechanics / Geomechanics Symposium 2014, 2014

  
• Fracture development and mechanism in shale cores by viscous oil, water and L-CO2 injection

  Z. Bennour; T. Ishida; Y. Nagaya; Y. Nara; Y. Chen; Q. Chen; Y. Nakayama; K. Sekine; Y. Nagano

  48th US Rock Mechanics / Geomechanics Symposium 2014, 2014

  
• Influence of water on subcritical crack growth in Marble

  Y. Nara; Y. Oe; S. Murata; T. Ishida; R. Nakabayashi; T. Yoneda

  75th European Association of Geoscientists and Engineers Conference and Exhibition 2013 Incorporating SPE EUROPEC 2013: Changing Frontiers, 2013

  
• Influence of clay-doped water on permeability in granite rock mass

  Yoshitaka NARA; Koki KASHIWAYA; Kazuki OKETANI; Hirokazu FUJII; Yue ZHAO; Masaji KATO; Kazuhei AOYAGI; Yusuke OZAKI; Hiroya MATSUI; Masanori KOHNO

  Journal of the Society of Materials Science, Japan, Mar. 2024, Peer-reviewed

  
• Effect of Reinforcing Steel Fiber on Permeability of High Strength and Ultra-Low Permeability Concrete

  Kotone Sakemoto; Masaji Kato; Yusuke Ishii; Kiyofumi Kurumisawa; Yoshitaka Nara

  Materials Transactions, 2022

  
• Permeability change in macro-fractured granite using water including clay

  Yoshitaka NARA; Masaji KATO; Tsutomu SATO; Masanori KOHNO; Toshinori SATO

  Journal of MMIJ, Apr. 2022, Peer-reviewed

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• Effect of Reinforcing Steel Fiber on Permeability of High Strength and Ultra Low Permeability Concrete

  SAKEMOTO Kotone; KATO Masaji; ISHII Yusuke; KURUMISAWA Kiyofumi; NARA Yoshitaka

  Journal of the Society of Materials Science, Japan, 15 Mar. 2022

  
• Numerical Analysis of Anisotropic Influence of Mode-I Fracture Toughness under Dynamic Loading for Rock using GPGPU-based Three-Dimensional Combined Finite-Discrete Element Method (FDEM)

  G. J. Min; D. Fukuda; S. W. Oh; Y. Nara; H. Liu; S. H. Cho

  IOP Conference Series: Earth and Environmental Science, 27 Oct. 2021

  
• Observation of fracture process of rocks subjected to freeze-thaw cycles using X-ray CT

  J. Kodama; M. Nakaya; Y. Nara; T. Goto; D. Fukuda; Y. Fujii; K. Kaneko

  ISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014, 2014

  
• Report on China-Japan Workshop on Mining and Underground Development

  NARA Yoshitaka

  journal of the Japan Society for Testing Materials, 2014

  
• A meso-mechanical approach to time-dependent deformation and fracturing of partially saturated sandstone

  Teng-Fei Fu; Tao Xu; Philip G. Meredith; Thomas M. Mitchell; Michael J. Heap; Yoshitaka Nara

  International Journal of Rock Mechanics and Mining Sciences, Sep. 2021, Peer-reviewed, Last author

  
• Analysis of capillary water imbibition in sandstone via a combination of nuclear magnetic resonance imaging and numerical DEM modeling

  Teng-Fei Fu; Tao Xu; Michael J. Heap; Philip G. Meredith; Tian-hong Yang; Thomas M. Mitchell; Yoshitaka Nara

  Engineering Geology, May 2021, Peer-reviewed, Last author

  
• Importance of Temperature Control in Surrounding Environment during Permeability Test for Measuring Hydraulic Constants of Rock

  Masaji KATO; Yoshitaka NARA; Daisuke FUKUDA; Masanori KOHNO; Toshinori SATO; Tsutomu SATO; Manabu TAKAHASHI

  Journal of the Society of Materials Science, Japan, 15 Apr. 2021, Peer-reviewed, Invited, Corresponding author

  
• Time-dependent deformation and fracture evolution around underground excavations

  Teng-Fei Fu; Tao Xu; P.L.P. Wasantha; Tian-Hong Yang; Yoshitaka Nara; Zhen Heng

  Geomatics, Natural Hazards and Risk, 07 Dec. 2020, Peer-reviewed

  
• Precise Permeability Measurement for High Strength and Ultra Low Permeability Concrete under Controlled Temperature

  Masaji Kato; Yoshitaka Nara; Kazutoshi Shibuya

  MATERIALS TRANSACTIONS, 01 Nov. 2020, Peer-reviewed, Corresponding author

  
• Development of a numerical simulator for 3D analysis of dynamicfracture processes of rocks based on a hybrid FEM-DEM using an extrinsiccohesive zone model

  Daisuke FUKUDA; Erina NIHEI; Sang Ho CHO; Sewook OH; Yoshitaka NARA; Junichi KODAMA; Yoshiaki FUJII

  Materials Transactions, Sep. 2020, Peer-reviewed

  
• Precise Permeability Measurement for High Strength and Ultra Low Permeability Concrete under Controlled Temperature

  Masaji KATO; Yoshitaka NARA; Kazutoshi SHIBUYA

  Zairyo, Mar. 2020, Peer-reviewed, Corresponding author

  
• Development of a numerical simulator for 3-D dynamic fracture process analysis of rocks based on hybrid FEM-DEM using extrinsic cohesive zone model

  Daisuke Fukuda; Erina Nihei; Sang Ho Cho; Sewook Oh; Yoshitaka Nara; Jun Ichi Kodama; Yoshiaki Fujii

  Zairyo/Journal of the Society of Materials Science, Japan, 2020, Peer-reviewed

  
• Precipitation of calcium compounds onto rock surfaces in water with cementitious material

  Yoshitaka Nara; Koki Kashiwaya; Akimasa Nakao; Hiroto Uchida; Yusaku Hamada; Kazutoshi Shibuya

  Carbonates and Evaporites, Sep. 2019, Peer-reviewed

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• Effects of clay mineral type and content on hydraulic conductivity of bentonite-sand mixtures

  Masanori Kohno; Yoshitaka Nara; Masaji Kato; Tsuyoshi Nishimura

  Clay Minerals, Dec. 2018, Peer-reviewed

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• Application of the transient pulse method to measure clay permeability

  Masaji Kato; Yoshitaka Nara; Yuki Okazaki; Masanori Kohno; Toshinori Sato; Tsutomu Sato; Manabu Takahashi

  Materials Transactions, Sep. 2018, Peer-reviewed

  
• Precipitation of Minerals on Rock Kept in Water with Different Calcium Ion Concentrations

  Yoshitaka Nara; Ryuta Kuwatani; Masanori Kohno; Toshinori Sato; Koki Kashiwaya

  Journal of the Society of Materials Science, Japan, Jul. 2018, Peer-reviewed

  
• Application of transient pulse method to permeability measurement for clay

  Masaji Kato; Yoshitaka Nara; Yuki Okazaki; Masanori Kohno; Toshinori Sato; Tsutomu Sato; Manabu Takahashi

  Zairyo/Journal of the Society of Materials Science, Japan, 01 Mar. 2018, Peer-reviewed

  
• Permeability of Granite Including Macro-Fracture Naturally Filled with Fine-Grained Minerals

  Yoshitaka Nara; Masaji Kato; Ryuhei Niri; Masanori Kohno; Toshinori Sato; Daisuke Fukuda; Tsutomu Sato; Manabu Takahashi

  Pure and Applied Geophysics, 01 Mar. 2018, Peer-reviewed

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• Influence of calcium ions on subcritical crack growth in granite

  Yoshitaka Nara; Tomoki Harui; Koki Kashiwaya

  International Journal of Rock Mechanics and Mining Sciences, 01 Feb. 2018, Peer-reviewed

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• The effect of offset on fracture permeability of rocks from the Southern Andes Volcanic Zone, Chile

  P. Perez-Flores; G. Wang; T. M. Mitchell; P. G. Meredith; Y. Nara; V. Sarkar; J. Cembrano

  JOURNAL OF STRUCTURAL GEOLOGY, Nov. 2017, Peer-reviewed

  
• Evaluating long-term strength of rock under changing environments from air to water

  Yoshitaka Nara; Mayu Tanaka; Tomoki Harui

  ENGINEERING FRACTURE MECHANICS, Jun. 2017, Peer-reviewed

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• Influence of surrounding environment on subcritical crack growth in marble

  Yoshitaka Nara; Koki Kashiwaya; Yuki Nishida; Toshinori Ii

  TECTONOPHYSICS, Jun. 2017, Peer-reviewed

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• Mass-Transport Process in Subcritical Crack Growth in Carrara Marble

  Yoshitaka Nara; Yuki Nishida; Koki Kashiwaya; Toshinori Ii

  ISRM EUROPEAN ROCK MECHANICS SYMPOSIUM EUROCK 2017, 2017, Peer-reviewed

  
• Influence of gouge thickness and grain size on permeability of macrofractured basalt

  G. Wang; T. M. Mitchell; P. G. Meredith; Y. Nara; Z. Wu

  JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, Dec. 2016, Peer-reviewed

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• Importance of temperature control in surrounding environment during permeability test for measuring hydraulic constants of rock

  Masaji Kato; Yoshitaka Nara; Daisuke Fukuda; Masanori Kohno; Toshinori Sato; Tsutomu Sato; Manabu Takahashi

  Zairyo/Journal of the Society of Materials Science, Japan, 01 Jul. 2016, Peer-reviewed

  
• P-wave propagation in dry rocks under controlled temperature and humidity

  Akimasa Nakao; Yoshitaka Nara; Taiki Kubo

  INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES, Jul. 2016, Peer-reviewed

  
• Environmental dependence of subcritical crack growth in marble

  Yuki Nishida; Yoshitaka Nara; Koki Kashiwaya; Tsuyoshi Ishida

  Zairyo/Journal of the Society of Materials Science, Japan, 01 Apr. 2016, Peer-reviewed

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• Crack Extension in Hydraulic Fracturing of Shale Cores Using Viscous Oil, Water, and Liquid Carbon Dioxide

  Ziad Bennour; Tsuyoshi Ishida; Yuya Nagaya; Youqing Chen; Yoshitaka Nara; Qu Chen; Kotaro Sekine; Yu Nagano

  ROCK MECHANICS AND ROCK ENGINEERING, Jul. 2015, Peer-reviewed

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• Effect of Anisotropy on the Long-Term Strength of Granite

  Yoshitaka Nara

  ROCK MECHANICS AND ROCK ENGINEERING, May 2015, Peer-reviewed

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• Evaluation of 3-D Strain Distribution in Lignite Based on Image Analysis

  D. Fukuda; M. Maruyama; J. Kodama; Y. Fujii; N. Aramaki; K. Kaneko; Y. Nara

  ISRM Congress 2015 (The 13th. International Congress of Rock Mechanics), 2015, Peer-reviewed

  
• Estimation of Long-Term Strength of Rock Based on Subcritical Crack Growth

  Yoshitaka Nara; Yuma Oe; Sumihiko Murata; Tsuyoshi Ishida; Katsuhiko Kaneko

  ENGINEERING GEOLOGY FOR SOCIETY AND TERRITORY, VOL 2: LANDSLIDE PROCESSES, 2015, Peer-reviewed

  
• Influences of electrolyte concentration on subcritical crack growth in sandstone in water

  Yoshitaka Nara; Ryo Nakabayashi; Megumi Maruyama; Naoki Hiroyoshi; Tetsuro Yoneda; Katsuhiko Kaneko

  ENGINEERING GEOLOGY, Sep. 2014, Peer-reviewed

  
• Observation of fracture sealing in high-strength and ultra-low-permeability concrete by micro-focus X-ray CT and SEM/EDX

  Daisuke Fukuda; Megumi Maruyama; Yoshitaka Nara; Daisuke Hayashi; Hideo Ogawa; Katsuhiko Kaneko

  INTERNATIONAL JOURNAL OF FRACTURE, Aug. 2014, Peer-reviewed

  
• Evaluation of long-term strength of rock with considering changes of surrounding environment based on subcritical crack growth

  Yoshitaka Nara; Yuma Oe; Sumihiko Murata; Tsuyoshi Ishida; Katsuhiko Kaneko

  Zairyo/Journal of the Society of Materials Science, Japan, 01 Mar. 2014, Peer-reviewed

  
• Influence of Fracture Width on Sealability in High-Strength and Ultra-Low-Permeability Concrete in Seawater

  Daisuke Fukuda; Yoshitaka Nara; Daisuke Hayashi; Hideo Ogawa; Katsuhiko Kaneko

  MATERIALS, Jul. 2013, Peer-reviewed

  
• Influence of temperature and water on subcritical crack growth parameters and long-term strength for igneous rocks

  Yoshitaka Nara; Hiroshi Yamanaka; Yuma Oe; Katsuhiko Kaneko

  GEOPHYSICAL JOURNAL INTERNATIONAL, Apr. 2013, Peer-reviewed

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• Sealing Behavior of Fracture in Cementitious Material with Micro-Focus X-Ray CT

  D. Fukuda; Y. Nara; D. Mori; K. Kaneko

  Advances in Computed Tomography for Geomaterials: GeoX 2010, 21 Jan. 2013, Peer-reviewed

  
• Relationship between three-dimensional distribution of P-wave velocity and crack parameter determined from Differential Strain Curve Analysis for granite

  Yoshitaka Nara; Harumi Kato; Katsuhiko Kaneko; Koji Matsuki; Takashi Sato; Hitoshi Tsukamoto

  Journal of MMIJ, 2013, Peer-reviewed

  
• Optimal delay time of blasting caps to reduce vibration due to the infrasound caused by blasting

  Motohiro Toma; Sumihiko Murata; Masashi Sankoda; Hiroyuki Ishida; Tomoyuki Shodai; Tomoki Yuasa; Yoshitaka Nara; Tsuyoshi Ishida

  Journal of MMIJ, 2013, Peer-reviewed

  
• Investigation of self-sealing in high-strength and ultra-low-permeability concrete in water using micro-focus X-ray CT

  Daisuke Fukuda; Yoshitaka Nara; Yuya Kobayashi; Megumi Maruyama; Mayuko Koketsu; Daisuke Hayashi; Hideo Ogawa; Katsuhiko Kaneko

  CEMENT AND CONCRETE RESEARCH, Nov. 2012, Peer-reviewed

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• Influence of relative humidity on fracture toughness of rock: Implications for subcritical crack growth

  Yoshitaka Nara; Kazuya Morimoto; Naoki Hiroyoshi; Tetsuro Yoneda; Katsuhiko Kaneko; Philip M. Benson

  INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, Sep. 2012, Peer-reviewed

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• Subcritical crack growth of Shirahama sandstone in water with various electrolyte concentrations

  Yoshitaka Nara; Naoki Hiroyoshi; Tetsuro Yoneda; Katsuhiko Kaneko

  Zairyo/Journal of the Society of Materials Science, Japan, Jul. 2012, Peer-reviewed

  
• Evaluation of Sealing of Macro-Fracture in High Strength and Ultra Low Permeability Concrete in Water Using Micro-Focus X-ray CT

  FUKUDA Daisuke; NARA Yoshitaka; HAYASHI Daisuke; OWADA Hitoshi; OGAWA Hideo; KANEKO Katsuhiko

  Journal of MMIJ, Jul. 2012, Peer-reviewed

  
• Permeability and elastic wave velocities in sandstone under hydrostatic pressure

  Yoshitaka Nara; Ryo Nakabayashi; Tetsuro Yoneda; Katsuhiko Kaneko; Philip George Meredith

  Zairyo/Journal of the Society of Materials Science, Japan, 2012, Peer-reviewed

  
• 203 Estimation of long-term strength of igneous rock considering surrounding environment

  OE Yuma; NARA Yoshitaka; MURATA Sumihiko; ISHIDA Tsuyoshi; KANEKO Katsuhiko

  学術講演会講演論文集, Jan. 2012

  
• 205 Measurement of P-wave velocity in sandstone under controlled temperature and humidity

  NAKAO Akimasa; NARA Yoshitaka; MURATA Sumihiko; ISHIDA Tsuyoshi; KANEKO Katsuhiko

  学術講演会講演論文集, Jan. 2012

  
• Influence of humidity and rock fabric on subcritical crack growth in rock

  Y. Nara; K. Kaneko; T. Yoneda; N. Hiroyoshi; K. Morimoto

  HARMONISING ROCK ENGINEERING AND THE ENVIRONMENT, 2012, Peer-reviewed

  
• Influence of pores, fractures and pressure on permeability and elastic wave velocities in rock

  Y. Nara; P.G. Meredith; R. Nakabayashi; T. Yoneda; K. Kaneko

  Proc. 7th Asian Rock Mechanics Symposium, 2012, Peer-reviewed

  
• Subcritical crack growth in sandstone in water with various electrolyte concentrations

  Y. Nara; R. Nakabayashi; N. Hiroyoshi; T. Yoneda; K. Kaneko; S. Murata; T. Ishida

  Proc. Near Surface Geoscience 2012, 2012, Peer-reviewed

  
• Effects of humidity and temperature on subcritical crack growth in sandstone

  Yoshitaka Nara; Kazuya Morimoto; Tetsuro Yoneda; Naoki Hiroyoshi; Katsuhiko Kaneko

  INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, Apr. 2011, Peer-reviewed

  
• Influence of macro-fractures and micro-fractures on permeability and elastic wave velocities in basalt at elevated pressure

  Yoshitaka Nara; Philip George Meredith; Tetsuro Yoneda; Katsuhiko Kaneko

  TECTONOPHYSICS, Apr. 2011, Peer-reviewed

  
• Determination of three-dimensional microcrack distribution and principal axes for granite using a polyhedral specimen

  Yoshitaka Nara; Harumi Kato; Tetsuro Yoneda; Katsuhiko Kaneko

  INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES, Feb. 2011, Peer-reviewed

  
• Fracturing Process and Durability Evaluation of Rocks Subjected to Freezing-and-Thawing Cycles

  Jun-ichi Kodama; Masashi Nakaya; Yoshitaka Nara; Tatsuhiko Goto; Yoshiaki Fujii; Katsuhiko Kaneko

  Journal of MMIJ, Feb. 2011, Peer-reviewed

  
• Estimation of three-dimensional stress distribution and elastic moduli in rock mass of the Tono area

  NARA Yoshitaka; Ho CHO Sang; YOSHIZAKI Takaya; KANEKO Katsuhiko; SATO Toshinori; NAKAMA Shigeo; MATSUI Hiroya

  International Journal of the JCRM, 2011, Peer-reviewed

  
• Subcritical crack growth and long-term strength in rock and cementitious material

  Yoshitaka Nara; Masafumi Takada; Daisuke Mori; Hitoshi Owada; Tetsuro Yoneda; Katsuhiko Kaneko

  INTERNATIONAL JOURNAL OF FRACTURE, Jul. 2010, Peer-reviewed

  
• Effects of relative humidity and temperature on subcritical crack growth in igneous rock

  Yoshitaka Nara; Naoki Hiroyoshi; Tetsuro Yoneda; Katsuhiko Kaneko

  INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES, Jun. 2010, Peer-reviewed

  
• Effect of surrounding environment on subcritical crack growth index and long-term strength for rock

  Yoshitaka Nara; Toshifumi Igarashi; Naoki Hiroyoshi; Tetsuro Yoneda; Katsuhiko Kaneko

  Zairyo/Journal of the Society of Materials Science, Japan, Mar. 2010, Peer-reviewed

  
• Effect of humidity on fracture toughness in sandstone

  Yoshitaka Nara; Kazuya Morimoto; Tetsuro Yoneda; Katsuhiko Kaneko

  Journal of MMIJ, Jan. 2010, Peer-reviewed

  
• Effect of water on subcritical crack growth index and long-term strength for rock

  Y. Nara; T. Igarashi; N. Hiroyoshi; T. Yoneda; K. Kaneko

  Proc. 72nd EAGE Conference & Exhibition incorporating SPE EUROPEC 2010 (Barcelona 2010), 2010, Peer-reviewed

  
• Determination of microcrack distribution and principal axes in granite

  Y. Nara; H. Kato; T. Yoneda; K. Kaneko

  Proc. 11th Congress of the International Association for Engineering Geology and the environment (IAEG 2010), 2010, Peer-reviewed

  
• Influence of temperature and water on subcritical crack growth in sandstone

  Y. Nara; T. Yoneda; K. Kaneko

  Proc. of European Geosciences Union General Assembly 2010, 2010, Peer-reviewed

  
• Subcritical crack growth and long-term strength in rock and high-strength and ultra low-permeability concrete

  Yoshitaka Nara; Masafumi Takada; Daisuke Mori; Hitoshi Owada; Tetsuro Yoneda; Katsuhiko Kaneko

  Zairyo/Journal of the Society of Materials Science, Japan, Jun. 2009, Peer-reviewed

  
• Effect of the Humidity on Subcritical Crack Growth in Sandstone

  Yoshitaka Nara; Kazuya Morimoto; Tetsuro Yoneda; Katsuhiko Kaneko

  Journal of MMIJ, May 2009, Peer-reviewed

  
• Subcritical crack growth in rocks in an aqueous environment

  NARA Yoshitaka; TAKADA Masafumi; IGARASHI Toshifumi; HIROYOSHI Naoki; KANEKO Katsuhiko

  Geophysical exploration, Mar. 2009, Peer-reviewed

  
• Effect of the Humidity on Subcritical Crack Growth in Igneous Rock

  Yoshitaka Nara; Tetsuro Yoneda; Katsuhiko Kaneko

  Journal of MMIJ, Feb. 2009, Peer-reviewed

  
• Subcritical crack growth in rocks in an aqueous environment

  Yoshitaka Nara; Masafumi Takada; Toshifumi Igarashi; Naoki Hiroyoshi; Katsuhiko Kaneko

  EXPLORATION GEOPHYSICS, 2009, Peer-reviewed

  
• Effect of pressure on permeability and elastic wave velocities in macro-fractured rock

  Y. Nara; P. Meredith; T. Yoneda; K. Kaneko

  Proc. 8th Euro Conference of Rock Physics & Geomechanics, 2009, Peer-reviewed

  
• Effect of humidity on fracture toughness and slow crack growth in sandstone

  Y. Nara; T. Yoneda; K. Kaneko

  Proc. ISRM Regional Symposium EUROCK 2009, 2009, Peer-reviewed

  
• Determination of the Principal Axes for Granite by Using the Polyhedral Specimen for the Purpose of the Characterization of the Microcrack Distribution

  Yoshitaka Nara; Harumi Kato; Katsuhiko Kaneko

  Journal of MMIJ, Dec. 2008, Peer-reviewed

  
• Effect of microstructure on dynamic elastic modulus of hardened cement paste

  Kiyofumi Kurumisawa; Toyoharu Nawa; Yoshitaka Nara

  Cement science and concrete technology, 2008, Peer-reviewed

  
• Microstructures and elastic behaviors of hardened cement paste

  Kiyofumi Kurumisawa; Toyoharu Nawa; Yoshitaka Nara

  Proceedings of the Japan Concrete Institute, 2008, Peer-reviewed

  
• Properties of P-wave propagation in granite with changes in temperature and humidity

  Yoshitaka Nara; Katsuhiko Kaneko

  Zairyo/Journal of the Society of Materials Science, Japan, Sep. 2007, Peer-reviewed

  
• Previous Results and New Development for Studies of Subcritical Crack Growth in Rock - To Understand Time-Dependent Behavior of Crack Growth -

  Yoshitaka Nara

  Journal of MMIJ, Jan. 2007, Peer-reviewed

  
• Relation between subcritical crack growth behavior and crack paths in granite

  Y. Nara; K. Koike; T. Yoneda; K. Kaneko

  INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES, Dec. 2006, Peer-reviewed

  
• Sub-critical crack growth in anisotropic rock

  Y Nara; K Kaneko

  INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES, Apr. 2006, Peer-reviewed

  
• The effects of the temperature and the humidity on the properties of the elastic wave propagation in granite

  Yoshitaka Nara; Katsuhiko Kaneko

  GeoCongress 2006: Geotechnical Engineering in the Information Technology Age, 2006, Peer-reviewed

  
• The change of P-wave velocity with temperature and humidity in granite

  Y. Nara; K. Kaneko

  EUROCK 2006 MULTIPHYSICS COUPLING AND LONG TERM BEHAVIOUR IN ROCK MECHANICS, 2006, Peer-reviewed

  
• Study of subcritical crack growth in andesite using the Double Torsion test

  Y. Nara; K. Kaneko

  INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES, Jun. 2005, Peer-reviewed

  
• Stress Corrosion Index of Kumamoto Andesite

  Yuzo Obara; Hae-Sik Jeong; Tomohiko Matsuyama; Yoshitaka Nara; Katsuhiko Kaneko

  Journal of MMIJ, May 2005, Peer-reviewed

  
• Analysis of crack path for subcritical crack growth in rocks

  Y. Nara; T. Yoneda; K. Kaneko

  EUROCK 2005: IMPACT OF HUMAN ACTIVITY ON THE GEOLOGICAL ENVIRONMENT, 2005, Peer-reviewed

  
• Relation between the subcritical crack growth behavior and the crack path in granite

  Y. Nara; T.Yoneda; K. Kaneko

  Proc. of 2005 East Asia Joint Symposium on Rock Engineering, 2005, Peer-reviewed

  
• Dependence of Subcritical Crack Growth on Rock Fabric and Environment

  Yoshitaka Nara; Yasuaki Imai; Katsuhiko Kaneko

  Journal of MMIJ, Aug. 2004, Peer-reviewed

  
• Anisotropy and Grain-Size Dependency of Crack Growth due to Stress Corrosion in Granite

  Yoshitaka Nara; Yuki Ohno; Yasuaki Imai; Katsuhiko

  Journal of MMIJ, Jan. 2004, Peer-reviewed

  
• Dependence of subcritical crack growth in rocks on water vapor pressure

  Nara Yoshitaka; Kaneko Katsuhiko

  Elsevier Geo-Engineering Book Series, 2004, Peer-reviewed

  
• Evaluation of The Elastic Constants of Granite

  Yoshitaka Nara; Katsuhiko Kaneko

  Journal of MMIJ, Jul. 2003, Peer-reviewed

  
• Anisotropy of Subcritical Crack Growth in Granite

  Y. Nara; T. Yoneda; K. Kaneko

  Proc. 2002 ISRM Regional Symp. (3rd Korea-Japan Joint Symp.) Rock Eng., 2002, Peer-reviewed

  

Misc.

• 砂岩のサブクリティカルき裂進展に及ぼす湿度の影響

  奈良禎太; 藤井義明; 市原義久; 澤田昌孝; 冨田新二; 金子勝比古

  資源・素材学会春季大会講演集, 2008

  
• 岩石内の緩やかな亀裂進展挙動に関する研究

  奈良 禎太

  資源・素材, 24 Sep. 2001

  
• X線CT/SEM-EDX観察によるセメント系材料のき裂閉塞挙動評価

  丸山恵; 福田大祐; 奈良禎太; 金子勝比古; 小川秀夫

  資源・素材学会北海道支部春季講演会講演要旨集, 2012

  
• マイクロフォーカスX線CTを用いた高精度画像差分に関する検討

  福田大祐; 奈良禎太; 金子勝比占; 林大介

  資源・素材学会春季大会講演集, 2011

  
• マイクロフォーカスX線CTを用いた高精度画像差分に関する検討

  福田大祐; 奈良禎太; 金子勝比古; 林大介

  資源・素材, 2011

  
• マイクロフォーカスX線CTを用いたセメント系材料におけるき裂閉塞挙動の観察

  纐纈麻佑子; 福田大祐; 奈良禎太; 金子勝比古; 林大介

  資源・素材学会北海道支部春季講演会講演要旨集, 2011

  
• セメント材料におけるひび割れ閉塞挙動について

  福田大祐; 奈良禎太; 森大介; 金子勝比古

  資源・素材, 2009

  
• 凍結融解作用を受けた登別溶結凝灰岩の表面および内部観察

  児玉 淳一; 奈良 禎太; 中谷 匡志; 後藤 龍彦; 金子 勝比古

  春季大会講演集. I, 資源編, 29 Mar. 2007

  
• 水溶液中での岩石のサブクリティカルき裂進展に関する研究

  奈良 禎太; 高田 雅史; 五十嵐 敏文; 広吉 直樹; 金子 勝比古

  春季大会講演集. I, 資源編, 29 Mar. 2007

  
• 水中における岩石のサブクリティカル亀裂進展に関する研究

  藏田 博文; 奈良 禎太; 五十嵐 敏文; 金子 勝比古

  春季大会講演集. I, 資源編, 27 Mar. 2006

  
• 花崗岩内のマイクロクラックの進展に関する研究

  奈良 禎太; 金子 勝比古

  春季大会講演集. I, 資源編, 27 Mar. 2006

  
• ダブルトーション法を用いた水中における岩石のサブクリティカル亀裂進展計測

  奈良 禎太; 藏田 博文; 金子 勝比古

  春季大会講演集. I, 資源編, 28 Mar. 2005

  
• ダブルトーション法を用いた岩石のサブクリティカル亀裂進展計測について

  奈良 禎太; 今井 康暁; 大野 有希; 金子 勝比古

  春季大会講演集. I, 資源編, 29 Mar. 2004

  
• 高湿度環境下における岩石の弾性波伝播特性

  今井 康暁; 奈良 禎太; 金子 勝比古

  春季大会講演集. I, 資源編, 29 Mar. 2004

  
• 岩石における低速亀裂進展現象の環境依存性に関する研究

  奈良 禎太; 金子 勝比古

  春季大会講演集. I, 資源編, 27 Mar. 2003

  
• 花崗岩における低速亀裂進展現象の異方性に関する研究

  奈良 禎太; 米田 哲朗; 金子 勝比古

  春季大会講演集. I, 資源編, 28 Mar. 2002

  
• 充填鉱物を有する花崗岩のき裂の水理開口幅の評価

  加藤昌治; 奈良禎太; 岡崎勇樹; 河野勝宣; 佐藤稔紀; 佐藤努; 福田大祐; 高橋学

  日本材料学会学術講演会講演論文集, 2017

  
• 異方性を考慮した岩石の3次元動的破壊プロセス解析法に関する基礎的検討

  二瓶恵理菜; 福田大祐; OH Se-Wook; 奈良禎太; CHO Sang-Ho; 児玉淳一; 藤井義明

  資源・素材(Web), 2017

  
• 粘土を含む水が流れる環境下での破壊した花崗岩における透水性の変化

  奈良禎太; 加藤昌治; 岡崎勇樹; 河野勝宣; 福田大祐; 佐藤努; 佐藤稔紀; 高橋学

  資源・素材(Web), 2017

  
• 花崗岩の透水性に及ぼすき裂修復の影響

  加藤昌治; 奈良禎太; 二里竜平; 河野勝宣; 佐藤稔紀; 佐藤努; 福田大祐; 高橋学

  日本材料学会学術講演会講演論文集, 2016

  
• 岩石と粘土におけるトランジェントパルス法を用いた透水係数測定

  加藤昌治; 奈良禎太; 岡崎勇樹; 河野勝宣; 佐藤稔紀; 佐藤努; 福田大祐; 高橋学

  資源・素材(Web), 2016

  
• 大島花崗岩における長期サブクリティカルき裂進展計測

  奈良禎太; 春井友貴; 河野勝宣; 加藤昌治; 福田大祐; 佐藤努

  資源・素材(Web), 2015

  
• 岩石の透水試験における温度制御の重要性

  加藤昌治; 奈良禎太; 河野勝宣; 福田大祐; 佐藤稔紀; 佐藤努; 高橋学

  資源・素材(Web), 2015

  
• 3次元画像解析を用いた岩石内ひずみ分布の評価法

  福田大祐; 丸山恵; 荒牧憲隆; 奈良禎太; 金子勝比古

  日本材料学会学術講演会講演論文集, 2014

  
• 高強度高緻密コンクリートのき裂閉塞挙動に与える温度の影響

  田中翔; 福田大祐; 奈良禎太; 金子勝比古; 小川秀夫

  資源・素材学会北海道支部春季講演会講演要旨集, 2014

  
• 淡水環境下における岩質材料のき裂閉塞挙動

  福田大祐; 丸山恵; 奈良禎太; 金子勝比古; 小川秀夫

  資源・素材(Web), 2014

  
• 3次元画像処理による岩石内ひずみ分布の評価

  丸山恵; 角田祐基; 福田大祐; 奈良禎太; 玉村修司; 金子勝比古

  資源・素材, 2013

  
• 岩石内のきれつの緩やかな進展

  奈良 禎太; 竹内 昌之

  一般発表(研究・業績発表)講演要旨集, 29 Mar. 2000

  
• Temporal change of permeability in macro-fractured granite by accumulation of fine-grained minerals

  Yoshitaka NARA; Masaji KATO; Tsutomu SATO; Masanori KOHNO; Toshinori SATO

  EGU General Assembly 2020, May 2020

  
• Permeability measurement for macro-fractured granite using water including clay

  Yoshitaka NARA; Masaji KATO; Tsutomu SATO; Masanori KOHNO; Toshinori SATO

  2019 ISRM Specialized Conference, the 5th ISRM Young Scholars' Symposium on Rock Mechanics and International Symposium on Rock Engineering for Innovative Future (YSRM2019&REIF2019), Dec. 2019

  
• Effect of clay mineral type and content on swelling characteristic and permeability of bentonite-sand mixtures

  Masanori KOHNO; Yoshitaka NARA; Masaji KATO; Tsuyoshi NISHIMURA

  Book of Abstracts of Clay Conference 2017 - The 7th International Conference on Clays in Natural and Engineered Barriers for Radioactive Waste Confinement, Sep. 2017

  
• Fracture sealing in rock by precipitation of calcium compound

  Yusaku HAMADA; Yoshitaka NARA; Masanori KOHNO; Kazutoshi SHIBUYA

  Proceedings of the 14th Japan Symposium on Rock Mechanics, Jan. 2017

  
• Effect of filling minerals on fracture permeability of granite

  Masaji KATO; Yoshitaka NARA; Masanori KOHNO; Toshinori SATO; Tsutomu SATO; Daisuke FUKUDA; Manabu TAKAHASHI

  Proceedings of the 14th Japan Symposium on Rock Mechanics, Jan. 2017

  
• Importance of temperature control during permeability test for measuring hydraulic constants of rock

  Masaji KATO; Yoshitaka NARA; Masanori KOHNO; Toshinori SATO; Daisuke FUKUDA; Tsutomu SATO; Manabu TAKAHASHI

  Rock Mechanics and Rock Engineering: From the Past to the Future (Resat Ulusay et al. editors), Proceedings of EUROCK 2016 - the 2016 ISRM International Symposium, Aug. 2016

  
• Precipitation of calcium compound on silicate rock surface

  Yoshitaka NARA; Ryuta KUWATANI; Masanori KOHNO; Yusaku HAMADA; Masaji KATO; Tsutomu SATO; Toshinori SATO

  Creative Development of Rock Mechanics and Engineering, Proceedings of the 2016 Korea-Japan Joint Symposium on Rock Engineering & 2016 Spring Conference and General Assembly of Korean Society for Rock Mechanics, May 2016

  
• 岩質材料の表面における鉱物析出挙動に関する基礎実験

  中尾尭雅; 奈良禎太; 内田紘人; 柏谷公希; 村田澄彦; 石田毅; 小川秀夫

  日本材料学会学術講演会講演論文集, 17 May 2013

  
• 炭酸塩岩石のサブクリティカルき裂進展計測

  奈良禎太; 大江悠真; 村田澄彦; 石田毅; 中林亮

  資源・素材学会春季大会講演集, 2013

  
• セメント系材料を用いた岩石表面における鉱物析出挙動の観察

  中尾尭雅; 奈良禎太; 柏谷公希; 村田澄彦; 石田毅; 小川秀夫

  資源・素材, 2013

  
• 発破低周波音低減方法検討のための数値シミュレーション

  湯浅友輝; 村田澄彦; 當麻玄大; 奈良禎太; 石田毅

  資源・素材, 2013

  
• 環境条件が変化する際の岩石の長期強度

  奈良禎太; 村田澄彦; 石田毅; 金子勝比古

  資源・素材, 2013

  
• 温度・湿度制御下における砂岩のP波伝播特性

  中尾尭雅; 奈良禎太; 村田澄彦; 石田毅; 金子勝比古

  岩の力学国内シンポジウム講演論文集(CD-ROM), 06 Dec. 2012

  
• 指数則でのサブクリティカル亀裂進展評価に基づく長期強度の計算

  大江悠真; 奈良禎太; 石田毅; 村田澄彦; 金子勝比古

  資源・素材, 11 Sep. 2012

  
• 坑壁安定性評価における中間主応力の影響評価

  関根孝太郎; 長野優羽; 中塚善博; 山本晃司; 石田毅; 村田澄彦; 奈良禎太

  石油天然ガス・金属鉱物資源機構石油開発技術本部年報, 31 Aug. 2012

  
• X線CT撮影下における三軸圧縮試験を用いた流体挙動モニタリングによる研究

  中塚善博; 河野文夫; 石田毅; 村田澄彦; 奈良禎太

  石油天然ガス・金属鉱物資源機構石油開発技術本部年報, 31 Aug. 2012

  
• 火成岩のサブクリティカルき裂進展指数の周辺環境依存性

  奈良禎太; 大江悠真; 村田澄彦; 石田毅; 金子勝比古

  日本材料学会学術講演会講演論文集, 25 May 2012

  
• 超臨界二酸化炭素と粘性の大きな油による水圧破砕試験

  永谷侑也; 青柳和平; 山川彩香; 石田毅; 村田澄彦; 奈良禎太; 陳渠; 中山芳樹

  資源・素材学会春季大会講演集, 2012

  
• ボアホールブレイクアウト開始と進展に対する中間主応力の影響について

  山川彩香; 青柳和平; 石田毅; 村田澄彦; 奈良禎太; 中塚善博; 関根孝太郎; 陳渠

  資源・素材学会春季大会講演集, 2012

  
• 数値シミュレーションによる発破低周波音伝播の検討

  湯浅友輝; 當麻玄大; 村田澄彦; 三小田昌史; 石田裕之; 正代知幸; 奈良禎太; 石田毅

  資源・素材学会春季大会講演集, 2012

  
• 岩石の非線形性がボアホールブレイクアウト発生応力条件に及ぼす影響について

  青柳和平; 山川彩香; 石田毅; 村田澄彦; 奈良禎太; 山本晃司; 長野優羽

  資源・素材学会春季大会講演集, 2012

  
• 発破低周波音低減のための最適な発破秒時差の検討

  當麻玄大; 湯浅友輝; 村田澄彦; 奈良禎太; 石田毅; 三小田昌史; 正代知幸; 石田裕之

  資源・素材, 2012

  
• 超臨界二酸化炭素と水による水圧破砕実験

  永谷侑也; 青柳和平; 山川彩香; 石田毅; 奈良禎太; 村田澄彦; 陳渠; 中山芳樹

  資源・素材, 2012

  
• 404 Influence of Humidity on Crack Propagation in Rock

  NARA Yoshitaka; YONEDA Tetsuro; KANEKO Katsuhiko

  学術講演会講演論文集, 2011

  
• 均質化法を用いた多孔質岩石の弾性定数評価

  小畑明広; 村田澄彦; 中村利宗; 石田毅; 奈良禎太; 金子勝比古

  日本材料学会学術講演会講演論文集, 18 May 2007

  
• 稲田花こう岩における緩やかな亀裂進展挙動に関する実験的研究

  奈良禎太; 竹内昌之; 米田哲朗; 加藤昌治; 金子勝比古

  資源・素材学会春季大会講演集, 29 Mar. 2001

  
• 稲田花崗岩における緩やかな亀裂進展挙動に関する実験的研究

  奈良 禎太; 竹内 昌之; 米田 哲朗; 加藤 昌治; 金子 勝比古

  一般発表(研究・業績発表)講演要旨集, 01 Mar. 2001

  

Awards

• 28 May 2021

  2020年度岩の力学連合会論文賞
• 29 May 2020

  2019年度岩の力学連合会フロンティア賞
• 29 May 2021

  日本材料学会令和2年度論文賞
• 28 Mar. 2006

  The Mining and Materials Processing Institute of Japan, 31st Award of Encouragement from The Mining and Materials Processing Institute of Japan
• 15 Jun. 2012

  Japanese Society for Rock Mechanics, Best Paper Award for Japanese Society for Rock Mechanics in FY2011
• Feb. 2015

  Elsevier, Outstanding Contribution in Reviewing (International Journal of Rock Mechanics and Mining Sciences)
• 28 Mar. 2015

  The Mining and Materials Processing Institute of Japan, Best Paper Award for The Mining and materials Processing Institute of Japan in FY2014
• Nov. 2016

  Elsevier, Outstanding Contribution in Reviewing (Engineering Geology)
• Jun. 2017

  Elsevier, Outstanding Contribution in Reviewing (International Journal of Rock Mechanics and Mining Sciences)
• Aug. 2017

  Elsevier, Outstanding Contribution in Reviewing (Engineering Fracture Mechancis)
• 29 May 2020

  Japan Society for Rock Mechanics and Rock Engineering, Frontier Award for Japanese Society for Rock Mechanics in FY2019
• 28 May 2021

  Japanese Society for Rock Mechanics, Best Paper Award for Japanese Society for Rock Mechanics in FY2020
• 29 May 2021

  The Society of Materials Science, Japan, Best Paper Award for The Society of Materials Science, Japan in FY2020

External funds: Kakenhi

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

  Grant-in-Aid for Scientific Research (C)

  Basic Section 22030:Geotechnical engineering-related

  Kyoto University

  Yoshitaka Nara

  From 01 Apr. 2019, To 31 Mar. 2022, Project Closed

  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

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19K04596/
• Control of long-term strength and permeability in rock-like materials based on fracture control by phisico-chemical phenomena

  Grant-in-Aid for Young Scientists (B)

  Tottori University;Kyoto University

  Yoshitaka NARA

  From 01 Apr. 2013, To 31 Mar. 2015, Project Closed

  岩石;セメント系材料;き裂;長期強度;自己修復;鉱物;温度;湿度;水;イオン濃度;き裂修復;フラクチャー;透過性

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-25870357/
• Small scale in situ experiments to inject supercritical and liquid carbon dioxide into rock mass

  Grant-in-Aid for Scientific Research (A)

  Kyoto University

  Tsuyoshi Ishida

  From 01 Apr. 2013, To 31 Mar. 2017, Project Closed

  二酸化炭素排出削減;資源開発工学;水圧破砕;岩盤;破壊;Acoustic Emission;微小地震;地殻・マントル物質;岩盤工学

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-25249131/
• Study of improvement of mechanical property of rock-like material by fracture closure cause by underground environment

  Grant-in-Aid for Research Activity Start-up

  Kyoto University

  Yoshitaka NARA

  From 01 Apr. 2011, To 31 Mar. 2013, Project Closed

  岩石;コンクリート;き裂;遮蔽性;岩石破壊;破壊閉塞;長期強度;地下環境;破壊修復;温度;湿度;水;セメント系材料

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23860027/
• Self-sealability of fractures in rock and its application to fracture and strength control

  Grant-in-Aid for Scientific Research (A)

  Hokkaido University

  Katsuhiko KANEKO

  From 01 Apr. 2010, To 31 Mar. 2014, Project Closed

  地殻工学;岩石;自己修復;亀裂;破壊力学;長期強度;X線CT;亀裂充填;３次元画像解析;EPMA;３次元画像処理;ダブルトーション試験;3次元画像処理

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22246114/
• Long-term stability and environmental protection of structures in rock mass by mineral precipitation using carbonated water and fine-grained materials

  Grant-in-Aid for Scientific Research (C)

  Basic Section 22030:Geotechnical engineering-related

  Kyoto University

  奈良 禎太

  From 01 Apr. 2022, To 31 Mar. 2025, Granted

  岩石;透水性;カルシウム;二酸化炭素;空隙閉塞;鉱物析出;カルシウム化合物;透水係数;岩盤;き裂;炭酸水;セメント系材料

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22K04308/
• 水・電解質・二酸化炭素による持続可能な岩盤物性向上－環境保全－資源生成技術の創出

  Grant-in-Aid for Scientific Research (C)

  Basic Section 22030:Geotechnical engineering-related

  Kyoto University

  奈良 禎太

  From 01 Apr. 2025, To 31 Mar. 2028, Adopted

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-25K07918/

External funds: others

• 力学・化学作用を利用した破壊した岩石の強度回復の促進・制御に関する基礎研究

  優秀若手研究者海外派遣事業

  From 01 Mar. 2010, To 09 Aug. 2010

  奈良禎太
• フラクチャーを含む岩石での圧力下における透過性保持・遮蔽性向上とその制御

  新井科学技術振興財団　研究助成

  From 01 Apr. 2012, To 31 Mar. 2013

  奈良禎太
• 岩石き裂の治癒作用を利用した不連続面のバリア性能向上に関する研究

  平成26年度放射性廃棄物共通技術調査等事業（放射性廃棄物重要基礎技術研究調査）

  From 10 Dec. 2014, To 15 Mar. 2018

  奈良禎太
• 炭酸カルシウムを用いた新しい二酸化炭素固定化技術とその岩盤破壊修復・エネルギー資源開発への適用

  前田記念工学振興財団　研究助成

  From 13 May 2016, To 31 Mar. 2017

  奈良禎太
• 分離・回収した二酸化炭素を利用した岩盤遮蔽性制御技術の提案

  新井科学技術振興財団　研究助成

  From 19 May 2016, To 31 Mar. 2017

  奈良禎太
• 炭酸水とカルシウムを利用した安全な二酸化炭素地中貯留技術の提案

  中部電気利用基礎研究振興財団　研究助成

  From 13 Apr. 2017, To 31 Mar. 2018

  奈良禎太
• 地球温暖化制御とエネルギー資源の生産・利用促進を同時に実現できる岩盤強化技術の創出

  八洲環境技術振興財団　研究助成

  From 01 Apr. 2018, To 31 Mar. 2019

  奈良禎太
• 海水・炭酸水・鉱物析出の相互作用による二酸化炭素地中貯留とエネルギー資源開発の促進

  東燃ゼネラル石油研究奨励・奨学財団　研究助成

  From 01 Apr. 2018, To 31 Mar. 2019

  奈良禎太
• Quantifying climateｰdependent subcritical cracking and mechanical weathering over geologic time

  NSF-BSF Joint Funding Research Grants

  From 28 Jan. 2020

  Missy Eppes
• 原位置での炭酸水注入による岩盤強度・遮蔽性能向上に関する研究

  大成学術財団　研究助成

  From 17 Apr. 2020, To 31 Mar. 2021

  奈良禎太
• 炭酸水とセメント系材料粉末の注入による岩盤強度・遮蔽性能向上機構解明と技術の構築

  前田記念工学振興財団　研究助成

  From 01 Apr. 2021, To 31 Mar. 2022

  奈良禎太
• 炭酸水とセメント系材料粉末注入による岩盤構造物強化と資源開発・環境保全への応用

  内藤泰春科学技術振興財団　研究助成

  From 01 Apr. 2021, To 31 Mar. 2022

  奈良禎太

Education

Teaching subject(s)

• From 01 Apr. 2025, To 31 Mar. 2026

  Internship on Infrastructure Engineering

  U059, Year-long, Graduate School of Engineering, 4
• From 01 Apr. 2025, To 31 Mar. 2026

  Long-Term Internship

  F150, Year-long, Graduate School of Engineering, 4
• From 01 Apr. 2024, To 31 Mar. 2025

  Measurement in the earth's crust environment

  F085, Spring, Graduate School of Engineering, 2
• From 01 Apr. 2024, To 31 Mar. 2025

  Integrated Seminar on Urban Management B

  U203, Fall, Graduate School of Engineering, 2
• From 01 Apr. 2024, To 31 Mar. 2025

  Integrated Seminar on Infrastructure Engineering B

  U052, Fall, Graduate School of Engineering, 2
• From 01 Apr. 2024, To 31 Mar. 2025

  Experimental Basics in Earth Resources and Energy Science

  3220, Spring, Faculty of Engineering, 2
• From 01 Apr. 2024, To 31 Mar. 2025

  Rock Engineering

  3176, Fall, Faculty of Engineering, 2
• From 01 Apr. 2024, To 31 Mar. 2025

  Advances in Earth and Energy Resources Technology

  3144, Fall, Faculty of Engineering, 2
• From 01 Apr. 2024, To 31 Mar. 2025

  Material testings for earth resources and energy engineering

  3309, Fall, Faculty of Engineering, 2
• From 01 Apr. 2024, To 31 Mar. 2025

  Mathematics for Civil, Environmental and Resources Engineering

  3297, Spring, Faculty of Engineering, 2
• From 01 Apr. 2024, To 31 Mar. 2025

  Graduation Thesis

  3999, Year-long, Faculty of Engineering, 5
• From 01 Apr. 2023, To 31 Mar. 2024

  Rock Engineering

  3176, Fall, Faculty of Engineering, 2
• From 01 Apr. 2023, To 31 Mar. 2024

  Material testings for earth resources and energy engineering

  3309, Fall, Faculty of Engineering, 2
• From 01 Apr. 2023, To 31 Mar. 2024

  Mathematics for Civil, Environmental and Resources Engineering

  3297, Spring, Faculty of Engineering, 2
• From 01 Apr. 2023, To 31 Mar. 2024

  Experimental Basics in Earth Resources and Energy Science

  3220, Spring, Faculty of Engineering, 2
• From 01 Apr. 2023, To 31 Mar. 2024

  Measurement in the earth's crust environment

  F085, Spring, Graduate School of Engineering, 2
• From 01 Apr. 2022, To 31 Mar. 2023

  Introduction to Earth Resources Engineering

  3250, Fall, Faculty of Engineering, 2
• From 01 Apr. 2022, To 31 Mar. 2023

  Materials in Earth Resources Engineering,Laboratory

  3157, Fall, Faculty of Engineering, 1
• From 01 Apr. 2022, To 31 Mar. 2023

  Rock Engineering

  3176, Fall, Faculty of Engineering, 2
• From 01 Apr. 2022, To 31 Mar. 2023

  Mathematics for Global Engineering

  3005, Spring, Faculty of Engineering, 2
• From 01 Apr. 2022, To 31 Mar. 2023

  Measurement in the earth's crust environment

  F085, Spring, Graduate School of Engineering, 2
• From 01 Apr. 2022, To 31 Mar. 2023

  Experimental Basics in Earth Resources and Energy Science

  3220, Spring, Faculty of Engineering, 2
• From Apr. 2011, To Mar. 2012

  資源工学材料実験

  Fall, 工学部
• From Apr. 2012, To Mar. 2013

  Experimental Basics in Earth Resources and Energy Science

  Spring, 工学部
• From Apr. 2012, To Mar. 2013

  Materials in Earth Resources Engineering,Laboratory

  Fall, 工学部
• From Apr. 2013, To Mar. 2014

  Materials in Earth Resources Engineering,Laboratory

  Fall, 工学部
• From Apr. 2013, To Mar. 2014

  Experimental Basics in Earth Resources and Energy Science

  Spring, 工学部
• From Apr. 2016, To Mar. 2017

  Crustal Development Engineering

  Spring, 工学部
• From Apr. 2017, To Mar. 2018

  Engineering Geology

  Spring, 工学部
• From Apr. 2017, To Mar. 2018

  Rock Engineering

  Fall, 工学部
• From Apr. 2017, To Mar. 2018

  Integrated Seminar on Infrastracture Engineering A

  Spring, 工学研究科
• From Apr. 2017, To Mar. 2018

  Experimental Basics in Earth Resources and Energy Science

  Spring, 工学部
• From Apr. 2017, To Mar. 2018

  Materials in Earth Resources Engineering,Laboratory

  Fall, 工学部
• From Apr. 2017, To Mar. 2018

  Integrated Seminar on Urban Management A

  Spring, 工学研究科
• From Apr. 2018, To Mar. 2019

  Advances in Earth and Energy Resources Technology

  Fall, 工学部
• From Apr. 2018, To Mar. 2019

  Mathematics for Global Engineering

  Spring, 工学部
• From Apr. 2018, To Mar. 2019

  Engineering Geology

  Spring, 工学部
• From Apr. 2018, To Mar. 2019

  Rock Engineering

  Fall, 工学部
• From Apr. 2018, To Mar. 2019

  Graduation Thesis

  Year-long, 工学部
• From Apr. 2018, To Mar. 2019

  Internship on Infrastracture Engineering

  Year-long, 工学研究科
• From Apr. 2018, To Mar. 2019

  Exercise on Project Planning

  Year-long, 工学研究科
• From Apr. 2018, To Mar. 2019

  Experimental Basics in Earth Resources and Energy Science

  Spring, 工学部
• From Apr. 2018, To Mar. 2019

  Materials in Earth Resources Engineering,Laboratory

  Fall, 工学部
• From Apr. 2018, To Mar. 2019

  Long-Term Internship

  Year-long, 工学研究科
• From Apr. 2019, To Mar. 2020

  ILAS Seminar

  Spring, 全学共通科目
• From Apr. 2019, To Mar. 2020

  Advances in Earth and Energy Resources Technology

  Fall, 工学部
• From Apr. 2019, To Mar. 2020

  Measurement in the earth's crust environment

  Spring, 工学研究科
• From Apr. 2019, To Mar. 2020

  Mathematics for Global Engineering

  Spring, 工学部
• From Apr. 2019, To Mar. 2020

  Engineering Geology

  Spring, 工学部
• From Apr. 2019, To Mar. 2020

  Rock Engineering

  Fall, 工学部
• From Apr. 2019, To Mar. 2020

  Master's Thesis

  Year-long, 工学研究科
• From Apr. 2019, To Mar. 2020

  Seminar on Infrastructure Engineering A

  Year-long, 工学研究科
• From Apr. 2019, To Mar. 2020

  Seminar on Infrastructure Engineering B

  Year-long, 工学研究科
• From Apr. 2019, To Mar. 2020

  ORT on Infrastructure Engineering

  Year-long, 工学研究科
• From Apr. 2019, To Mar. 2020

  Practice in Infrastructure Engineering

  Fall, 工学研究科
• From Apr. 2019, To Mar. 2020

  Practice in Advanced Infrastructure Engineering A

  Spring, 工学研究科
• From Apr. 2019, To Mar. 2020

  Practice in Advanced Infrastructure Engineering B

  Fall, 工学研究科
• From Apr. 2019, To Mar. 2020

  Introduction to Earth Resources Engineering

  Fall, 工学部
• From Apr. 2019, To Mar. 2020

  Experimental Basics in Earth Resources and Energy Science

  Spring, 工学部
• From Apr. 2019, To Mar. 2020

  Materials in Earth Resources Engineering,Laboratory

  Fall, 工学部
• From Apr. 2019, To Mar. 2020

  Seminar on Urban Management A

  Year-long, 工学研究科
• From Apr. 2019, To Mar. 2020

  Seminar on Urban Management B

  Year-long, 工学研究科
• From Apr. 2019, To Mar. 2020

  ORT on Urban Management

  Year-long, 工学研究科
• From Apr. 2019, To Mar. 2020

  Practice in Urban Management

  Fall, 工学研究科
• From Apr. 2019, To Mar. 2020

  Practice in Advanced Urban Management A

  Spring, 工学研究科
• From Apr. 2019, To Mar. 2020

  Practice in Advanced Urban Management B

  Fall, 工学研究科
• From Apr. 2020, To Mar. 2021

  Measurement in the earth's crust environment

  Spring, 工学研究科
• From Apr. 2020, To Mar. 2021

  Mathematics for Global Engineering

  Spring, 工学部
• From Apr. 2020, To Mar. 2021

  Rock Engineering

  Fall, 工学部
• From Apr. 2020, To Mar. 2021

  Introduction to Earth Resources Engineering

  Fall, 工学部
• From Apr. 2020, To Mar. 2021

  Experimental Basics in Earth Resources and Energy Science, Laboratory

  Spring, 工学部
• From Apr. 2020, To Mar. 2021

  Materials testing for mineral science and technology

  Fall, 工学部
• From Apr. 2021, To Mar. 2022

  ILAS Seminar :Exploring the Earth's Crust from Rocks

  Spring, 全学共通科目
• From Apr. 2021, To Mar. 2022

  Measurement in the earth's crust environment

  Spring, 工学研究科
• From Apr. 2021, To Mar. 2022

  Mathematics for Global Engineering

  Spring, 工学部
• From Apr. 2021, To Mar. 2022

  Rock Engineering

  Fall, 工学部
• From Apr. 2021, To Mar. 2022

  Introduction to Earth Resources Engineering

  Fall, 工学部
• From Apr. 2021, To Mar. 2022

  Experimental Basics in Earth Resources and Energy Science, Laboratory

  Spring, 工学部
• From Apr. 2021, To Mar. 2022

  Materials testing for mineral science and technology

  Fall, 工学部

Participation in PhD Defense

• Characterizing hydraulic properties of fractured rocks using DFN model and FEMDEM method for tunnelling applications

  Jin Wu, Graduate School of Engineering, Sub-chief Examiner

  24 Sep. 2021

Student achievements: Awards

• 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」優秀発表賞

  鎌田健人, 資源・素材学会関西支部, 10 Dec. 2021
• 資源・素材学会関西支部 第16回「若手研究者・学生のための研究発表会」優秀発表賞

  西口正剛, 資源・素材学会関西支部, 06 Dec. 2019
• 資源・素材学会平成２２年度若手ポスター賞

  渡邊侑斗, 資源・素材学会, 14 Sep. 2010

Part-time lecturer

• From 01 Oct. 2016, To 31 Mar. 2017

  鳥取大学, 大学院工学研究科

Administration

Faculty management (title, position)

• From 01 Apr. 2017, To 31 Mar. 2019

  工学研究科工学研究倫理委員会　委員
• From 01 Apr. 2020, To 31 Mar. 2021

  工学研究科・工学部図書委員会　委員