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Journal Articles

Runoff analysis in Horonobe basin based on spatial estimation of hydrological quantities

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

Journal Articles

Revaluation concerning application of a new quantitative rock mass classification for crystalline rock

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.

Journal Articles

Applicability for the estimation of a rock strength by Schmidt hammer based on in-situ measurement

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.

Journal Articles

The Project for grouting development for the high level radioactive waste repository, 6; Analysis of the in-situ grouting test results using Gustafson and Stille model

Tsuji, Masakuni*; Nobuto, Jun*; Okihara, Mistunobu*; 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

Journal Articles

The Project for grouting development for the high level radioactive waste repository, 3; Durability test of coloidal silica grout

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

Journal Articles

The Project for grouting development for high level radioactive waste repository, 4; Development of superfine spherical silica grout

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

Journal Articles

The Project for grouting development for high level radioactive waste repository, 7; Preliminary investigation for the in-situ grouting test at the grimsel test site

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

Journal Articles

The Project for grouting development for high level radioactive waste repository, 5; In-situ grouting experiment at the Horonobe URL

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

Journal Articles

The Project for grouting development for high level radioactive waste repository, 2; Relationship between basic properties and penetrability of low-alkaline cementitious grout material

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

Journal Articles

Initial stress estimation of diatomaceous mudstone using hydraulic fracturing test and borehole breakout method

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.

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