Regional hydrogeological study project; Results from 1992-1999 period

Koide, Kaoru; Nakano, Katsushi; Takeuchi, Shinji; Hama, Katsuhiro; ; Ikeda, Koki;

JNC TN7400 2000-014, 83 Pages, 2000/11

JNC-TN7400-2000-014.pdf:4.84MB

The Japan Nuclear Cycle Development Institute (JNC) has been conducting a wide range of geoscientific research in order to build a firm scientific and technological basis for the research and development of geological disposal. One of the major components of the ongoing geoscientific research programme is the Regional Hydrogeological Study (RHS) project in the Tono region, central Japan. The main goal of the RHS project is to develop and demonstrate surface-based investigation methodologies to characterize geological environments at a regional scale in Japan. The RHS project was initiated in 1992. The first five years of the project were devoted mainly to develop methodologies and techniques for deep borehole investigations in crystalline rock in Japan. Investigations to verify the performance of new instruments and methods for borehole drilling, hydraulic testing and groundwater sampling were conducted. In the last four years, surface-based investigations and a stepwise development of models of the geological environment have been carried out. To date, remote sensing, geological mapping, airborne and ground geophysical investigations, and measurements in eleven deep boreholes have been carried out. Hydro monitorring is continuing in these boreholes. Important results that have been obtained from these investigations include multi-disciplinaly information about the heterogeneity of lithology and hydraulic, geochemical and rock mechanical properties of the granitic rock, and evolution of the groundwater geochemistry. Technical knowledge and experience have been accumulated, which allow application of the methodologies and techniques to characterize the geological environment in crystalline rock. The results from these R%D activities were used as prime inputs for the H12 report that JNC submitted to the Japanese Government in l999. Results from such R&D is also acknowledged by other geoscientific studies in general. JNC will synthesize the results from R&D ...

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Koide, Kaoru; Nakano, Katsushi; ; ; ; Saito, Hiroshi

JNC TN7410 2000-002, 31 Pages, 2000/04

JNC-TN7410-2000-002.pdf:1.55MB

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Shimo, Michito*; *

JNC TJ7400 2000-008, 157 Pages, 2000/03

JNC-TJ7400-2000-008.pdf:4.02MB

no abstracts in English

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Sato, Toshinori

JNC TN7400 99-012, 99 Pages, 1999/12

JNC-TN7400-99-012.pdf:6.13MB

Working Programme for MIU-4 Borehole Investigations

Ota, Kunio; Nakano, Katsushi; Metcalfe, R.; Ikeda, Koki; ; Amano, Kenji; Takeuchi, Shinji; Hama, Katsuhiro; Matsui, Hiroya

JNC TN7410 99-007, 44 Pages, 1999/08

JNC-TN7410-99-007.pdf:2.59MB

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*

JNC TJ7420 98-003, 85 Pages, 1998/08

JNC-TJ7420-98-003.pdf:6.29MB

no abstracts in English

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Nakashima, Satoshi*

PNC TJ7725 98-001, 68 Pages, 1998/05

PNC-TJ7725-98-001.pdf:2.63MB

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Field test of the PNC mobile investigation system

*; *; Nakano, Katsushi

PNC TN7410 98-001, 37 Pages, 1998/02

PNC-TN7410-98-001.pdf:2.39MB

Power Reactor and Nuclear Fuel Development Corporation (PNC) has been developing groundwater research instruments in order to characterize hydraulic and geochemical environments in the deep underground. As part of this development programme, a support system was developed in 1996 to conduct groundwater investigations efficiently. This system, called the PNC Mobile Investigation System, consists of 5 units: a data acquisition and analysis unit, a maintenance unit, a hoisting unit, a cable drum for hydraulic tests (Type I), and a cable drum for groundwater sampling (Type II). The system is the following features: (1) Groundwater investigation is possible without a drill machine and rig. (2) Long term investigation is possible without housing facilities and utilities. (3) Maintenance of instruments is possible in the field. (4) Control units, such as the computer, are well protected from the external environment. (5) Groundwater analysis is possible in the field. (6)Recovery of instruments stuck in the borehole is possible using the emergency hoisting unit. The first field test of this system was performed in February and March, 1997. Through this test, it was confirmed that the system had met its performance design when combined with a proper hydraulic test instrument. Much useful information for future improvements to the system was also obtained.

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; ; ; Koide, Kaoru; Yoshida, Hidekazu; Hama, Katsuhiro; Todaka, Norifumi

PNC TN7010 97-005, 17 Pages, 1997/08

PNC-TN7010-97-005.pdf:0.48MB

no abstracts in English

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*

PNC TJ7439 97-003, 41 Pages, 1997/03

PNC-TJ7439-97-003.pdf:1.0MB

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