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Kojima, Wataru; Yamakami, Mitsunori; Fujikawa, Daisuke; Orukawa, Go*; Kitagawa, Yoshito*; Doi, Takashi*; Saito, Ryosuke*
Doboku Gakkai Heisei-20-Nendo Zenkoku Taikai Dai-63-Kai Nenji Gakujutsu Koenkai Koen Rombunshu, p.453 - 454, 2008/09
no abstracts in English
Morioka, Hiroshi*; Yamazaki, Masanao; Matsui, Hiroya; Orukawa, Go*; Yamaguchi, Takehiro
JAEA-Research 2008-009, 263 Pages, 2008/07
On the "Development of engineering techniques for use in the deep underground environment" in Phase 1, based on the various type of data acquired on investigations from the surface, basic design of underground facilities in advance was carried out. This report summarizes the support design of underground facilities carried out in 2004.
Kumagai, Yasuhito; Funaki, Hironori; Yamazaki, Masanao; Yamaguchi, Takehiro; Orukawa, Go*; Sanada, Hiroyuki; Abe, Hironobu
JAEA-Data/Code 2007-025, 106 Pages, 2008/07
The shafts in construction of the underground facilities were started in earnest in 2006. The measurement plan applied to measurements in the underground facilities for validation of the geological environmental model was drew up and was carried out. This data code summarizes the measurements data acquired in 2006 of Phase 2 (investigations during construction of the underground facilities).
Shibano, Kazunori; Orukawa, Go*; Yasue, Kenichi; Funaki, Hironori; Kurikami, Hiroshi
JAEA-Research 2008-033, 27 Pages, 2008/06
The hydrogeological model of shallow zone was built by using the data of core observation and permeability tests in the shallow boreholes drilled prior to the shaft excavation. Then, groundwater flow analysis of shaft excavation was performed using the hydrogeological model. By making a comparison between inflow rate into the shaft obtained by the analysis and measured inflow rate to the depth of 50m, the hydrogeological model and the performance of the cut-off wall established around the shaft were evaluated. The prediction analysis showed that the cut-off wall was the adequate performance and the hydraulic conductivity of fresh rock in the Koetoi Formation directly influenced the inflow rate below the cut-off wall. The simplified model in the report is efficient to reflect the excavation execution of the underground facility.
Morioka, Hiroshi; Yamaguchi, Takehiro; Funaki, Hironori; Orukawa, Go
JAEA-Research 2007-050, 60 Pages, 2007/06
JAEA is carrying out phased investigation in Horonobe. This investigation, named as "Horonobe Underground Research Laboratory Project" (Horonobe URL Project) targeting sedimentary formations, is intended to confirm the reliability of technologies on geological disposal of High-Level Radioactive Waste (HLW) by applying them into in-situ geological environment. On the "Development of engineering techniques for use in the deep underground environment" in Phase 1 of the Horonobe URL project, based on the various type of data acquired on investigations from the surface, basic design of underground facilities in advance was carried out. This report summarizes the measurement plan during construction of the underground facility based on the design in advance and the observational construction program for feedback measurements data into design and construction on subsequent steps. This report also describes about design and construction management program for contractor of underground facilities. The measurement plan described in this document is applied to measurements in the underground facilities for validation of the geological environmental model. Then, it will be verified the validity by application into actual construction and will be systematized with modification when necessary.
Orukawa, Go; Morioka, Hiroshi; Nishiyama, Seiji*
Dai-41-Kai Jiban Kogaku Kenkyu Happyokai Happyo Koenshu, p.1739 - 1740, 2006/07
no abstracts in English
Orukawa, Go; Morioka, Hiroshi; Yamakami, Mitsunori; Murakawa, Shiro*
Denryoku Doboku, (324), p.82 - 86, 2006/07
no abstracts in English
Orukawa, Go; Kojima, Wataru; Shirato, Nobuaki*; Saito, Toshiki*
Konkurito Kogaku Nenji Rombunshu (DVD-ROM), 28(1), p.1637 - 1642, 2006/00
no abstracts in English
Funaki, Hironori; Yasue, Kenichi; Kunimaru, Takanori; Orukawa, Go; Nago, Makito*
no journal, ,
no abstracts in English
Orukawa, Go; Yamakami, Mitsunori; Funaki, Hironori; Nago, Makito*
no journal, ,
no abstracts in English
Funaki, Hironori; Orukawa, Go; Nago, Makito*; Yasue, Kenichi; Niizato, Tadafumi; Tominaga, Eiji*
no journal, ,
no abstracts in English