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Nakanishi, Tatsuro; Uyama, Masao*; Tanaka, Tatsuya*
Doboku Gakkai Heisei-22-Nendo Zenkoku Taikai Dai-65-Kai Nenji Gakujutsu Koenkai Koen Gaiyoshu (DVD-ROM), p.95 - 96, 2010/09
no abstracts in English
Kishi, Hirokazu; Izumi, Atsushi; Toida, Masaru*
Doboku Gakkai Heisei-22-Nendo Zenkoku Taikai Dai-65-Kai Nenji Gakujutsu Koenkai Koen Gaiyoshu (DVD-ROM), p.91 - 92, 2010/09
no abstracts in English
Yamamoto, Yoichi; Maekawa, Keisuke; Yokota, Hideharu; Mukai, Kazuyuki*; Ishii, Keiji*
Doboku Gakkai Heisei-22-Nendo Zenkoku Taikai Dai-65-Kai Nenji Gakujutsu Koenkai Koen Gaiyoshu (DVD-ROM), p.525 - 526, 2010/09
no abstracts in English
Kuji, Masayoshi*; Asai, Hideaki; Matsui, Hiroya
Doboku Gakkai Heisei-22-Nendo Zenkoku Taikai Dai-65-Kai Nenji Gakujutsu Koenkai Koen Gaiyoshu (DVD-ROM), p.139 - 140, 2010/09
Two deep shafts (the Main Shaft and the Ventilation Shaft) at The Mizunami Underground Research Laboratory (MIU) is currently being constructed by Japan Atomic Energy Agency (JAEA). To estimate the rock mass quality and UCS on shaft wall, existent rock mass classification methods (CRIEPI, RMR and New-JH) and in-situ Schmidt hammer tests were applied in rock. In this report, applicability for the estimation of rock strength by Schmidt hammer is discussed based on in-situ measurement data.
Suzuki, Kenichiro*; Miura, Norihiko*; Iriya, Keishiro*; Noda, Masaru*; Kishi, Hirokazu
Doboku Gakkai Heisei-22-Nendo Zenkoku Taikai Dai-65-Kai Nenji Gakujutsu Koenkai Koen Gaiyoshu (DVD-ROM), p.85 - 86, 2010/09
no abstracts in English
Asai, Hideaki; Kuji, Masayoshi*; Matsui, Hiroya
Doboku Gakkai Heisei-22-Nendo Zenkoku Taikai Dai-65-Kai Nenji Gakujutsu Koenkai Koen Gaiyoshu (DVD-ROM), p.137 - 138, 2010/09
Two deep shafts (the Main Shaft and the Ventilation Shaft) at The Mizunami Underground Research Laboratory (MIU) is currently being constructed by Japan Atomic Energy Agency (JAEA). We proposed a new quantitative rock mass classification methods based on JGS standard besides existing rock mass classification methods (CRIEPI, RMR and New-JH). Afterward, the new classification method is applied to the drift, and it reports on the result of revaluing applicability concerning the new classification method.
Tsuji, Masakuni*; Nobuto, Jun*; Okihara, Mitsunobu*; Sugita, Yutaka; Fujita, Tomoo; Shinkai, Fumiaki
Doboku Gakkai Heisei-22-Nendo Zenkoku Taikai Dai-65-Kai Nenji Gakujutsu Koenkai Koen Gaiyoshu (DVD-ROM), p.93 - 94, 2010/09
no abstracts in English
Sugiyama, Hirokazu*; Nobuto, Jun*; Fukuoka, Naomi; Shinkai, Fumiaki; Shimada, Shunsuke*; Koyama, Tadao*; Kijima, Masashi*; Terashima, Rei*
Doboku Gakkai Heisei-22-Nendo Zenkoku Taikai Dai-65-Kai Nenji Gakujutsu Koenkai Koen Gaiyoshu (DVD-ROM), p.87 - 88, 2010/09
no abstracts in English
Yamada, Tsutomu*; Sekine, Ichiro*; Sekiguchi, Takashi*; Ishida, Hideaki*; Kishi, Hirokazu; Fukuoka, Naomi
Doboku Gakkai Heisei-22-Nendo Zenkoku Taikai Dai-65-Kai Nenji Gakujutsu Koenkai Koen Gaiyoshu (DVD-ROM), p.89 - 90, 2010/09
no abstracts in English
Nakamura, Takahiro; Sanada, Hiroyuki; Sugita, Yutaka; Kato, Harumi*
Doboku Gakkai Heisei-22-Nendo Zenkoku Taikai Dai-65-Kai Nenji Gakujutsu Koenkai Koen Gaiyoshu (DVD-ROM), p.129 - 130, 2010/09
Horonobe Underground Research Laboratory (URL) project aims at improvement of the reliability of technologies for geological disposal of high level radioactive wastes. In investigation during construction of the underground facilities, the updating and check of the validity of initial stress estimations made during surface-based investigations is one of the main issues. Thus, three boreholes were made from the niche (GL-140 m) of ventilation and east shaft, and a three-dimensional evaluation of the initial stress in Koetoi Formation was done by the method called hydraulic fracturing technique and the analysis of the borehole breakout. Moreover, the direction of the maximum horizontal principal stress had been found to be east/west in general. However, the present test showed that the direction was 26 or 46 degrees counterclockwise from east/west.
Yoshimura, Aya*; Ichimura, Takahito; Kitami, Takayuki; Horiguchi, Takashi; Kawama, Itsuo*; Ouchi, Hajime*; Tsunokake, Hisao*
no journal, ,
no abstracts in English
Yamanishi, Takeshi; Sekiya, Yoshitomo; Sataka, Hiroyuki; Kitagawa, Yoshito*; Kato, Kinya*
no journal, ,
no abstracts in English
Yamanishi, Takeshi; Sekiya, Yoshitomo; Suzuki, Tatsuya; Kitagawa, Yoshito*; Kato, Kinya*; Saito, Ryosuke*
no journal, ,
no abstracts in English
Sekiya, Yoshitomo; Shimoyama, Tadashi; Anada, Hideki*; Kanatani, Tsugio*; Yamanishi, Takeshi
no journal, ,
no abstracts in English
Sekiya, Yoshitomo; Shimoyama, Tadashi; Hirakawa, Yoshiaki*; Narashima, Yoshimasa*; Yamanishi, Takeshi
no journal, ,
no abstracts in English
Fujita, Tomoo; Sasamoto, Hiroshi; Naito, Morimasa; Yui, Mikazu
no journal, ,
no abstracts in English
Tsusaka, Kimikazu; Tokiwa, Tetsuya; Inagaki, Daisuke
no journal, ,
no abstracts in English
Naemura, Yumi*; Ijiri, Yuji*; Amano, Kenji; Yokota, Hideharu; Maekawa, Keisuke; Sawada, Atsushi
no journal, ,
no abstracts in English
Sato, Shin*; Noda, Masaru*; Hata, Koji*; Matsui, Hiroya; Mikake, Shinichiro
no journal, ,
In MIU project, a unexpected fault zone was confirmed in the excavation of sedimentary formation of Main shaft. Therefore, the pilot borehole investigation was carried out in FY2008 to plan the excavation below sedimentary formation. This report describe the effectiveness of the pilot borehole investigation in mechanical point of view. In detail, the laboratory tests using of the core were performed in the fault zone and the rock mechanical model reconstruct based on the results. Then, numerical simulation was carried out and compared the results to measured displacements and force in concrete lining at Main shaft, first design for support in MIU project.
Uyama, Masao*; Noda, Masatoshi*; Noda, Masaru*; Hasegawa, Hiroshi*; Matsui, Hiroya; Suzuki, Yohei*; Hamako, Tadashi*; Tanaka, Yuji*
no journal, ,
Dynamic injection method increase the penetration of grout material and apply the grouting of small and low permeable crack in rock mass. This paper report the results of in-situ dynamic injection under high water pressure condition by using of the developed system reported Part1. This test used the borehole drilled in collaboration study between JAEA and AIST and the budget is a part of contract study from NISA.