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Funaki, Hironori; Asamori, Koichi; Sanada, Hiroyuki; Hatsuyama, Yoshihiro*; Yamamoto, Takuya*; Ijiri, Yuji*; Matsuoka, Kiyoyuki*; Kimura, Kazuhiro*; Lin, S.*; Kumagai, Toshifumi*
JAEA-Data/Code 2010-002, 151 Pages, 2010/06
JAEA-Data-Code-2010-002.pdf:43.13MB
JAEA is implementing Horonobe URL Project as research and development of geological disposal. The investigation of the pilot boring was carried out around the Ventilation shaft in order to decide grouting plan and plant of effluent treating. This report summarize as data-code results of geophysical loggings.
Yabuuchi, Satoshi; Kunimaru, Takanori; Ishii, Eiichi; Hatsuyama, Yoshihiro*; Ijiri, Yuji*; Matsuoka, Kiyoyuki*; Ibara, Tetsuo*; Matsunami, Shinjiro*; Makino, Akiya*
JAEA-Data/Code 2008-026, 62 Pages, 2009/02
JAEA-Data-Code-2008-026.pdf:8.23MB
The Pilot Borehole Investigation of the Ventilation Shaft was conducted in Horonobe, Hokkaido, Japan from October 2007 to March 2008. Main purpose of the investigation is to understand geological, hydrogeological and hydrochemical properties of the formation where the Ventilation Shaft has been excavated. Hydraulic packer tests show that hydraulic conductivity lies in the range from 1.1E-11 to 1.4E-7 m/sec down to 500 m in depth. This heterogeneity mainly depends on the distribution and permeability of groundwater inflow points, which were detected by Fluid Electric Conductivity logging. High conductive zones were found between 263 m and 290 m, 355 m and 370 m of the depth in the pilot borehole. An effective method for reducing groundwater inflow should be considered for the deeper Ventilation Shaft excavation.
Matsuoka, Kiyoyuki*
JNC TJ7420 2005-114, 59 Pages, 2000/03
JNC-TJ7420-2005-114.pdf:11.24MB
no abstracts in English
Matsuoka, Kiyoyuki*; Sakurai, Yutaka*
PNC TJ7586 98-002, 63 Pages, 1998/02
None
Matsuoka, Kiyoyuki*; Sakuarai, Yutaka*
PNC TJ7586 98-001, 150 Pages, 1998/02
None
Matsuoka, Kiyoyuki*; *; *
PNC TJ7586 94-002, 115 Pages, 1994/03
PNC-TJ7586-94-002.pdf:115.47MB
no abstracts in English
Takeuchi, Shinji; Matsuoka, Kiyoyuki*; Niibori, Yuichi*
no journal, ,
Fluid Electric Conductivity (FEC) Logging was performed in 1000m borehole, named DH-15, located near to the Mizunami Underground Research Laboratory Site in Mizunami, central Japan. The purpose of this study is to detect water-conducting features of fractured rock in the deep borehole and to evaluate hydraulic properties such as transmissivity and electric conductivity (salinity). 29 water-conducting features (WCFs) were identified by the logging with changing pumping rate three times and evaluated hydraulic properties with numerical simulation based on the advection-diffusion equation. We propose this method would be useful for evaluating hydraulic properties for WCFs in deep underground effectively.
Bruines, P.*; Ando, Kenichi*; Niibori, Yuichi*; Matsuoka, Kiyoyuki*; Takeuchi, Shinji
no journal, ,
Fluid electric conductivity (FEC) measurements have been carried out in the 1,350 m long MIZ-1 borehole followed by the modeling of FEC curve with newly developed finite difference code and obtaining tranmissivity in each feed point from FEC logging. The obtained results are comparable to those obtained by hydraulic testing. The method can be valuable to help in the selection of locations for more detailed hydraulic tests. Under certain circumstances the method can be used as a low cost alternative to hydraulic testing.