Methodology development for colloid investigation in groundwater

Omori, Kazuaki; Munemoto, Takashi; Hasegawa, Takashi; Shingu, Shinya*; Hagiwara, Hiroki; Iwatsuki, Teruki

JAEA-Research 2014-013, 29 Pages, 2014/08

JAEA-Research-2014-013.pdf:48.04MB

We summarized investigation method of colloid in groundwater. We examined the ultrafiltration of groundwater by using in-situ water monitoring system and batch type airtight container. Additionally, we examined the cross flow filtration method replaced by ultrafiltration. The knowledge of investigating methods is obtained.

Mizunami Underground Research Laboratory Project, Annual report for fiscal year 2012

Hama, Katsuhiro; Mikake, Shinichiro; Nishio, Kazuhisa; Matsuoka, Toshiyuki; Ishibashi, Masayuki; Sasao, Eiji; Hikima, Ryoichi*; Tanno, Takeo*; Sanada, Hiroyuki; Onoe, Hironori; et al.

JAEA-Review 2013-050, 114 Pages, 2014/02

JAEA-Review-2013-050.pdf:19.95MB

Japan Atomic Energy Agency (JAEA) at Tono Geoscience Center (TGC) is pursuing a geoscientific research and development project namely the Mizunami Underground Research Laboratory (MIU) Project in crystalline rock environment in order to construct scientific and technological basis for geological disposal of High-level Radioactive Waste (HLW). The MIU Project has three overlapping phases: Surface-based Investigation phase (Phase I), Construction phase (Phase II), and Operation phase (Phase III). The MIU Project has been ongoing the Phase II and the Phase III in fiscal year 2012. This report presents the results of the investigations, construction and collaboration studies in fiscal year 2012, as a part of the Phase II and Phase III based on the MIU Master Plan updated in 2010.

Hydrochemical investigation at the Mizunami Underground Research Laboratory; Compilation of groundwater chemistry data in Mizunami group and Toki granite (fiscal year 2011)

Omori, Kazuaki; Shingu, Shinya; Hagiwara, Hiroki; Masuda, Kaoru*; Iizuka, Masatoshi*; Inui, Michiharu*; Iwatsuki, Teruki

JAEA-Data/Code 2013-001, 330 Pages, 2013/05

JAEA-Data-Code-2013-001.pdf:23.85MB

Japan Atomic Energy Agency has been investigated the groundwater chemistry on excavating the underground facilities as part of the Mizunami Underground Research Laboratory (MIU) Project at Mizunami, Gifu, Japan. This report compiles data of the groundwater chemistry obtained at MIU in the fiscal year 2011. In terms of ensuring traceability of data, basic information (e.g. sampling location, sampling date, sampling method, analytical method) and methodology for quality control is described.

Monitoring of pore water pressure and groundwater chemistry at MSB-2 and MSB-4 boreholes in the MIU construction site; April, 2010 - March, 2011

Hagiwara, Hiroki; Shingu, Shinya; Kurita, Kazuaki*; Eguchi, Keita*; Horita, Masakuni*; Mizuno, Takashi

JAEA-Data/Code 2012-005, 67 Pages, 2012/06

JAEA-Data-Code-2012-005.pdf:3.42MB
JAEA-Data-Code-2012-005-appendix(CD-ROM).zip:0.74MB

Japan Atomic Energy Agency has been carried out investigations to understand the fluctuation of groundwater chemistry related to the shafts excavation at the Mizunami Underground Research Laboratory in Mizunami City, Gifu prefecture, Japan. The data for pore water pressure, water temperature and groundwater chemistry have been provided from two surface-based boreholes, MSB-2 and MSB-4 boreholes, installed a modular multilevel groundwater monitoring system (MP system). The monitoring has been conducted once in a month since April 2003. According to the results, the shaft excavation has caused drawdown of the hydraulic head and change in the groundwater chemistry in the MIU construction site. In this report, the data of monitoring at the MSB-2 and the MSB-4 boreholes from April 2010 to March 2011 were compiled. In addition, the monitoring results at the DH-2 borehole as part of Regional Hydrogeological Study project, are summarized as an appendix.

Mizunami Underground Research Laboratory Project; Results of the borehole investigations to understand the geological environment in and around the Main-shaft fault

Tsuruta, Tadahiko; Takeda, Masaki; Ueno, Takashi; Daimaru, Shuji; Tokuyasu, Shingo; Onoe, Hironori; Shingu, Shinya; Ishibashi, Masayuki; Takeuchi, Ryuji; Matsuoka, Toshiyuki; et al.

JAEA-Technology 2012-001, 134 Pages, 2012/03

JAEA-Technology-2012-001.pdf:41.2MB
JAEA-Technology-2012-001(errata).pdf:0.44MB
JAEA-Technology-2012-001-appendix(CD-ROM).pdf:6.37MB

Tono Geoscientific Research Unit of Japan Atomic Energy Agency (JAEA) is performing the Mizunami Underground Research Laboratory (MIU) project in order to establish comprehensive techniques for the investigation, analysis and assessment of the deep geological environment in fractured crystalline rock. The borehole investigations (two boreholes; 10MI22 borehole and 10MI23 borehole) have been carried out to obtain information on geological, hydrological and hydrochemical characteristics in and around the Main-shaft fault. These investigations provided that features of fracture and alteration on rock mass in and around the Main-shaft fault. Hydrological and hydrochemical properties based on the geological features were also obtained.

Hydrochemical investigation at the Mizunami Underground Research Laboratory; Compilation of groundwater chemistry in the Mizunami group and Toki granite (fiscal year 2009)

Shingu, Shinya; Sai, Masataka*; Hagiwara, Hiroki; Mizuno, Takashi

JAEA-Data/Code 2011-004, 49 Pages, 2011/06

JAEA-Data-Code-2011-004.pdf:2.87MB

This report compiles data set of the groundwater chemistry obtained at Mizunami Underground Research Laboratory (MIU) in the fiscal year 2009. These data include groundwater chemistry of inflow in the shafts and sampled groundwater in the boreholes, which drilled from sub-stages of MIU and from surface (MSB-2, MSB-4, and MIZ-1). Basic information (e.g. sampling location, sampling date, sampling method, analytical method) is also described in terms of ensuring traceability of data.

Biogeochemical investigation of deep granitic groundwater from Mizunami Underground Research Laboratory (MIU)

Fukuda, Akari; Kozuka, Mariko*; Konno, Yuta*; Aosai, Daisuke; Shingu, Shinya; Hagiwara, Hiroki; Mizuno, Takashi; Suzuki, Yohei*

no journal, , 

no abstracts in English

Notices in hydrochemical investigation on excavation large scale underground facility

Shingu, Shinya; Hagiwara, Hiroki; Omori, Kazuaki; Fukuda, Akari; Tsuyuguchi, Koji; Iwatsuki, Teruki

no journal, , 

no abstracts in English

Hydrochemical characterization at Mizunami Underground Research Laboratory; Adequacy assessment of the result of surface-based investigation phase

Mizuno, Takashi; Aosai, Daisuke; Shingu, Shinya; Yamamoto, Yuhei; Fukuda, Akari; Hagiwara, Hiroki

no journal, , 

no abstracts in English

Hydrogeochemical investigation of colloid in deep subsurface at Mizunami Underground Research Laboratory

Omori, Kazuaki; Hama, Katsuhiro; Hagiwara, Hiroki; Shingu, Shinya; Fukuda, Akari; Iwatsuki, Teruki

no journal, , 

no abstracts in English