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Dei, Shuntaro
JAEA-Data/Code 2023-008, 49 Pages, 2023/07
JAEA-Data-Code-2023-008.pdf:5.41MB
JAEA-Data-Code-2023-008-appendix(CD-ROM).zip:7.08MB
Japan Atomic Energy Agency had been conducting "geoscientific study" and "research and development on geological disposal" in the Horonobe Underground Research Laboratory (URL) for safe geological disposal of high-level radioactive waste. In the Horonobe underground research project for FY 2020 and subsequent years, the pressure and water quality of groundwater have been continuously monitored using monitoring systems in order to obtain the data necessary for conducting the remaining important issues. This report presents groundwater pressure which have been obtained from April 2019 to March 2022 by the monitoring systems installed at the 140 m and 350 m gallery.
Honda, Norihisa; Dei, Shuntaro; Ishii, Eiichi
JAEA-Data/Code 2022-002, 37 Pages, 2022/06
JAEA-Data-Code-2022-002.pdf:2.85MBJAEA-Data-Code-2022-002-appendix(CD-ROM).zip:5.68MB
Long-term monitoring of pore pressure/groundwater level has been performed at the deep boreholes HDB-1-11 and PB-V01 and seven shallow boreholes in the Horonobe Underground Research Laboratory Project. This report summarizes the results obtained from the starts of monitoring to March 2021.
Dei, Shuntaro; Mochizuki, Akihito
JAEA-Data/Code 2022-001, 29 Pages, 2022/06
JAEA-Data-Code-2022-001.pdf:3.03MBJAEA-Data-Code-2022-001-appendix(CD-ROM).zip:2.06MB
Japan Atomic Energy Agency had been conducting "geoscientific study" and "research and development on geological disposal" in the Horonobe Underground Research Laboratory (URL) for safe geological disposal of high-level radioactive waste. In the Horonobe underground research project for FY 2020 and subsequent years, the pressure and water quality of groundwater have been continuously monitored using monitoring systems in order to obtain the data necessary for conducting the remaining important issues which were deduced from summarization of important issues between 2015-2019. This report presents pressure and physicochemical parameters (temperature, pH, electrical conductivity, oxidation-reduction potential and dissolved oxygen concentration) of groundwater which have been obtained from April 2020 to the end of March 2021 by the monitoring systems installed at the 140 m, 250 m and 350 m gallery.
Dei, Shuntaro; Mochizuki, Akihito; Miyakawa, Kazuya; Sasamoto, Hiroshi
JAEA-Data/Code 2021-005, 54 Pages, 2021/06
JAEA-Data-Code-2021-005.pdf:4.95MBJAEA-Data-Code-2021-005-appendix(CD-ROM).zip:5.42MB
Japan Atomic Energy Agency had been conducting "geoscientific study" and "research and development on geological disposal" in the Horonobe Underground Research Laboratory (URL) for safe geological disposal of high-level radioactive waste. Groundwater pressure, pH, and oxidation-reduction potential in the deep groundwater have been continuously monitored with monitoring systems which were developed in the Horonobe URL Project. This report presents the physicochemical parameters of groundwater which have been obtained by the monitoring systems installed at the 140 m, 250 m and 350 m gallery. The data acquired from April 2017 to the end of March 2020 was summarized along with related information such as the specifications of boreholes.
Dei, Shuntaro; Miyakawa, Kazuya; Sasamoto, Hiroshi; Tachi, Yukio; Amano, Yuki; Francisco, P. C. M.; Sugiura, Yuki; Takahashi, Yoshio*
no journal, ,
no abstracts in English
Dei, Shuntaro; Tachi, Yukio; Amano, Yuki; Francisco, P. C. M.; Sugiura, Yuki; Takahashi, Yoshio*
no journal, ,
no abstracts in English
Dei, Shuntaro; Tachi, Yukio; Amano, Yuki; Sugiura, Yuki; Francisco, P. C. M.; Takahashi, Yoshio*
no journal, ,
Dei, Shuntaro; Amano, Yuki; Sugiura, Yuki; Shibata, Masahito*; Negishi, Kumi*; Yokoyama, Tatsunori; Kagami, Saya; Takeda, Masaki; Mochizuki, Akihito; Sakurai, Akitaka; et al.
no journal, ,
no abstracts in English