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Journal Articles

Monitoring for chemical property of muck from deep shaft

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

JAEA Reports

Support design of underground facilities in the Horonobe Underground Research Laboratory project

Morioka, Hiroshi*; Yamazaki, Masanao; Matsui, Hiroya; Orukawa, Go*; Yamaguchi, Takehiro

JAEA-Research 2008-009, 263 Pages, 2008/07

JAEA-Research-2008-009.pdf:32.63MB

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.

JAEA Reports

Collection of URL measurement data in 2006 at the Horonobe Underground Research Laboratory project

Kumagai, Yasuhito; Funaki, Hironori; Yamazaki, Masanao; Yamaguchi, Takehiro; Orukawa, Go*; Sanada, Hiroyuki; Abe, Hironobu

JAEA-Data/Code 2007-025, 106 Pages, 2008/07

JAEA-Data-Code-2007-025.pdf:12.75MB

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).

JAEA Reports

Prediction of groundwater flow rate into shaft to the depth of 50m

Shibano, Kazunori; Orukawa, Go*; Yasue, Kenichi; Funaki, Hironori; Kurikami, Hiroshi

JAEA-Research 2008-033, 27 Pages, 2008/06

JAEA-Research-2008-033.pdf:2.33MB

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.

JAEA Reports

Measurement plan and observational construction program on shaft excavation at the Horonobe Underground Research Laboratory Project

Morioka, Hiroshi; Yamaguchi, Takehiro; Funaki, Hironori; Orukawa, Go

JAEA-Research 2007-050, 60 Pages, 2007/06

JAEA-Research-2007-050.pdf:5.29MB

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.

Journal Articles

Seismic performance verification of support for underground research shafts and drifts of Horonobe Underground Research Laboratory Project

Orukawa, Go; Morioka, Hiroshi; Nishiyama, Seiji*

Dai-41-Kai Jiban Kogaku Kenkyu Happyokai Happyo Koenshu, p.1739 - 1740, 2006/07

no abstracts in English

Journal Articles

Outline and support design for underground research shafts and drifts of Horonobe Underground Research Laboratory Project

Orukawa, Go; Morioka, Hiroshi; Yamakami, Mitsunori; Murakawa, Shiro*

Denryoku Doboku, (324), p.82 - 86, 2006/07

no abstracts in English

Journal Articles

Applicability of coal ash (fly ash) to high strength shotcrete

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

Oral presentation

Hydrogeological characteristics of surface sediments at the periglacial region, Horonobe area, northern Hokkaido

Funaki, Hironori; Yasue, Kenichi; Kunimaru, Takanori; Orukawa, Go; Nago, Makito*

no journal, , 

no abstracts in English

Oral presentation

Decrease the volume of springwater from shafts by cut-off walls constructed around underground research shafts

Orukawa, Go; Yamakami, Mitsunori; Funaki, Hironori; Nago, Makito*

no journal, , 

no abstracts in English

Oral presentation

Hydrogeological investigation associated with construction of a large underground facility; A Case of the Horonobe area, northern Hokkaido

Funaki, Hironori; Orukawa, Go; Nago, Makito*; Yasue, Kenichi; Niizato, Tadafumi; Tominaga, Eiji*

no journal, , 

no abstracts in English

11 (Records 1-11 displayed on this page)
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