The Planning of future research program of underground laboratories in overseas

*; Tanai, Kenji; *

JNC TN8420 2001-007, 86 Pages, 2002/02

JNC-TN8420-2001-007.pdf:6.04MB

The objectives of this study is to identify the research issues, which are to be conducted in the future underground research laboratory, about operation and logistics systems for the planning of future research and development program. The research programs and experiments,etc. were investigated for the geological disposal projects in overseas sedimentary rocks and coastal geological environments aiming to reflect in the future underground research facility plan in Japan. In the investigation, information on the engineered-barrier performance, design and construction of underground facilities, tunnel support, transportation and emplacement, and backfilling technology, etc. were collected. Based on these informations, the purpose, the content, and the result of each investigations and tests were arranged. The strategy and the aim in the entire underground research facility, and the flow of investigations and tests, etc. were also arranged from the purpose, the relations and the sequence of each investigation and experiment, and the usage of results, etc.

Data collection by literature survey on rock physical properties in Japan (II)

Sato, Toshinori; Taniguchi, Wataru; Fujita, Tomoo; Hasegawa, Hiroshi

JNC TN7400 99-011, 36 Pages, 1999/12

JNC-TN7400-99-011.pdf:1.55MB

In order to understand the general thermal and mechanical properties of rock masses and initial stress of rock at depth, data were compiled from the published literature in Japan and collected from investigations carried out at Kamaishi mine and Tono mine. Statistical examinations derived the ranges, means and medians of the mechanical properties for the different rock types. It was confirmed that the correlations between the mechanical properties were in agreement with correlations determined previously in other similar surveys. The unconfined compressive strength of Neogene sedimentary rocks showed a tendency to increase with increasing depth ( 500 m). An examination of the measured initial stress data collected through literature surveys showed that the vertical stress can be approximated by the extent of gravitational loading at a particular point. There is an approximately linear relationship between the average stress in a horizontal plane and the depth. The lateral pressure coefficient tends to have a high value and large range at shallow depths, but tends towards 1 with increasing depth.

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*; *; *; *; Morooka, Koichi*; *

JNC TJ1400 99-025, 483 Pages, 1999/02

JNC-TJ1400-99-025.pdf:20.57MB

no abstracts in English

None

PNC TY1569 98-001, 34 Pages, 1996/03

PNC-TY1569-98-001.pdf:2.03MB

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PNC TJ1205 96-001, 109 Pages, 1996/02

PNC-TJ1205-96-001.pdf:2.97MB

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PNC TJ1205 95-001, 70 Pages, 1995/03

PNC-TJ1205-95-001.pdf:1.94MB

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Yamamoto, Takuya*; Yoshioka, Naoya*

PNC TJ1449 93-004, 74 Pages, 1993/01

PNC-TJ1449-93-004.pdf:2.61MB

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; Fujita, Tomoo; ; Noda, Masaru

PNC TN1410 92-055, 99 Pages, 1992/01

PNC-TN1410-92-055.pdf:3.35MB

no abstracts in English

None

*

PNC TN7420 89-010, 80 Pages, 1988/11

PNC-TN7420-89-010.pdf:1.9MB

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