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Koji Hata

Obayashi Corporation

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Publication

Featured researches published by Koji Hata.

Archive | 1999

Method of measuring dimension and shape using digital camera

Shuji Hashimoto; Koji Hata; Hajime Ouchi; 一 大内; 周司 橋本; 浩二 畑

Journal of The Society of Materials Science, Japan | 1990

PREDICTION OF FAILURE IN ROCK MASSES BY ACOUSTIC EMISSION

Kazutoshi Michihiro; Koji Hata; Toshio Fujiwara; Hisaya Yoshioka

Journal of The Society of Materials Science, Japan | 1993

In Situ Strain Measurement around Shaft in Sedimentary Rock and its Numerical Analysis.

Hisaya Yoshioka; Kozo Sugihara; Hideo Kinashi; Koji Hata; Makoto Maruyama

JOURNAL OF TUNNEL ENGINEERING, JSCE | 2008

Evaluation of Geological Characteristics Ahead of the Tunnel Face Using Both Conversion Analysis of Non-Core Drilling Parameters And New Parameter “Normalized Drilling Velocity Ratio”

Toru Kuwahara; Koji Hata; Yusen Inagawa; Yasuyuki Hirakawa

Journal of The Society of Materials Science, Japan | 1998

Study on Evaluation of Loosened Area around Rock Cavern by In Situ Acoustic Emission Measurement.

Koji Hata; Hisaya Yoshioka; Hideo Kinashi

Journal of The Society of Materials Science, Japan | 1995

Application of Acoustic Emission Technique for Estimation of Initial Stress.

Koji Hata; Kazutoshi Michihiro; Hisaya Yoshioka; Kozo Sugihara

Journal of The Society of Materials Science, Japan | 1988

Estimation of initial stress in various rocks by acoustic emission.

Kazutoshi Michihiro; Koji Hata; Toshio Fujiwara; Hisaya Yoshioka

Journal of Japan Society of Civil Engineers | 2015

DEVELOPMENT AND APPLICATION OF TUNNEL PREDICTIVE CIM USING INFORMATION AND COMMUNICATIONS TECHNOLOGY

Koji Hata; Shinya Sugiura; Naomi Goto; Daisuke Fujioka

Journal of Japan Society of Civil Engineers | 2015

A NUMERICAL MODEL TO SIMULATE THE CREEP AND THE STRAIN SOFTENING BEHAVIOUR OF ROCK

Kenichi Nakaoka; Koji Hata; Yujing Jiang

International Journal of the JCRM | 2012

New geological prediction ahead of the tunnel face by the exploration drilling system during the tunnel excavation

Toru Kuwahara; Koji Hata; Kenichi Nakaoka; Yusen Inagawa

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Hisaya Yoshioka

Obayashi Corporation

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Kazutoshi Michihiro

Setsunan University

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Toshio Fujiwara

Obayashi Corporation

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Hideo Kiyama

Tottori University

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Kenichi Nakaoka

Obayashi Corporation

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Shuji Hashimoto

Waseda University

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Toru Kuwahara

Obayashi Corporation

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Shingo Nakamura

Shibaura Institute of Technology

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Yoshimitsu Aoki

Shibaura Institute of Technology

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Yusen Inagawa

Obayashi Corporation

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