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Journal Articles

Tunnel support design for anisotropic stress state and comparison between in-situ convergence results and calculated results

Motoshima, Takayuki*; Yabuki, Yoshio*; Minamide, Masashi*; Nago, Makito*; Aoyagi, Kazuhei

Tonneru Kogaku Hokokushu (CD-ROM), 24, p.I_10_1 - I_10_5, 2014/12

Economic tunnel support design for Horonobe underground research laboratory was obtained according to the relationship in the direction of the initial stress and the direction of excavation. The authors compared between the in situ convergence results and calculated results in order to investigate the validity of initial stress measurements. As a result, a positive correlation was observed between the in situ convergence results and calculated results, and the difference between the two was able to be explained by the difference between the assumed deformation coefficient and the measured coefficient. From these results, the measurement results of the initial stress performed in the surface based investigation has been confirmed almost reasonable.

Oral presentation

Mechanism and countermeasure of crack in the concrete liner for a shaft in soft sedimentary rock

Minamide, Masashi*; Hagihara, Takeshi*; Nago, Makito*; Ogawa, Hiroyuki*; Uyama, Mikinori*; Kisu, Yoshio*; Morimoto, Tsutomu*; Yabuki, Yoshio*; Kudo, Hajime; Inagaki, Daisuke; et al.

no journal, , 

no abstracts in English

Oral presentation

Observational construction method for construction of the Horonobe Underground Research Laboratory

Minamide, Masashi*; Kudo, Hajime; Tsusaka, Kimikazu; Hagihara, Takeshi*; Ogawa, Hiroyuki*; Morimoto, Tsutomu*; Yabuki, Yoshio*; Nago, Makito*

no journal, , 

no abstracts in English

Oral presentation

The In-situ experiment for performance confirmation of engineered barrier system at Horonobe Underground Research Laboratory; Investigation and construction technique for backfill using rock spoil from URL excavation

Shirase, Mitsuyasu*; Niunoya, Sumio*; Yabuki, Yoshio*; Nakayama, Masashi; Ono, Hirokazu

no journal, , 

Japan Atomic Energy Agency is conducting the in-situ experiment for verification of performance of engineered barrier system in Horonobe Underground Research Laboratory. The purpose of this paper is reporting the investigation and construction technique for backfill using rock spoil from URL excavation. This paper also reports the results of quality control of in-situ measurements for backfill.

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