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Tanai, Kenji; Horita, M.*; Dewa, Katsuyuki*; Goke, Mitsuo*
JNC TN8410 2001-026, 116 Pages, 2002/03
Earthquake resistance for the underground structure is higher than the ground structure. Therefore, the case of examining the earthquake resistance of underground structure was little. However, it carries out the research on the aseismic designing method of underground structure, since the tunnel was struck by Hyogo-ken Nanbu Earthquake, and it has obtained a much knowledge. However, an object of the most study was behavior at earthquake of the comparatively shallow underground structure in the alluvial plain board, and it not carry out the examination on behavior at earthquake of underground structure in the deep rock mass. In the meantime, underground disposal facility of the high level radioactive waste constructs in the deep underground, and it carries out the operation in these tunnels. In addition, it has made almost the general process of including from the construction start to the backfilling to be about 60 years (Japan Nuclear Fuel Cycle Development Institute, 1999). During these periods, it is necessary to also consider the earthquake resistance as underground structure from the viewpoint of the safety of facilities. Then, it extracted future problem as one of the improvement of the basis information for the decision of the safety standard and guideline of the country on earthquake-resistant design of the underground disposal facility, while it carried out investigation and arrangement of earthquake-resistant design cases, guidelines and analysis method on existing underground structure, etc.. And, the research item for the earthquake resistance assessment of underground structure as case study of the underground research laboratory.
Horita, M.*; *; Okutsu, Kazuo*; Yamamoto, Takuya*; Amemiya, Kiyoshi*
JNC TJ8400 2000-022, 303 Pages, 2000/02
This report gives supplementary information and discussions on issues of the high-level waste geological disposal study. The following subjects are discussed ; (1)Evaluation of the effects of coefficient of lateral pressure to the specifications of disposal facilities (2)Functional development of remote operational machinery (3)Arrangement of basic data on cost estimation for disposal (4)Understanding of engineering countermeasures to potential phenomena deep under the ground (5)Selection of construction technologies (6)Establishment of the disposal concept under the coasts. For the coefficient of lateral pressure equal to 2, the cross section of disposal drift, the disposal drift spacing, the waste package pitch in the disposal drift and the specification of supporting system are designed. They are compared with those for the case of coefficient of lateral pressure equal to 1. In the case of coefficient of lateral pressure equal to 2, total length of drifts is 1.5 times, and total excavation volume is 1.8 times larger than later case. For the sealing, transportation and emplacement equipment for waste, technology of the fundamental function, remote operation, accidental events and countermeasures are discussed. The plan for developments on those items is proposed. The item of the cost for the construction, operation, and backfilling are discussed. The surface facilities, and, worker arrangement plan are proposed. For the potential phenomena encountered deep under the ground, the countermeasures are investigated form the construction experience, and the future research subjects are discussed for the underground research laboratory. For the construction technologies, the experience of construction management for the tunnel is investigated, and, the research subjects are proposed. For the disposal concept under coasts, rock condition, design condition, construction management, and quality control are compared with the disposal concept under the ground. The ...
Kubota, Shigeru*; *; Okutsu, Kazuo*; Horita, M.*; Amemiya, Kiyoshi*
PNC TJ1449 98-001, 1944 Pages, 1998/02
None
Yoshioka, Naoya*; Tsuchihara, H.*; Horita, M.*; Kinoshita, Naoto*
PNC TJ1449 96-007, 349 Pages, 1996/03
None
*; Horita, M.*; Ishii, T.*; Yamamoto, Isamu*; Horie, Y.*; Hokari, T.*; *
PNC TJ1060 92-006, 128 Pages, 1992/11
None
Aoyama, S.*; Ishii, T.*; Horie, Y.*; Hokari, T.*; Horita, M.*
PNC TJ1060 92-002, 854 Pages, 1992/03
None
Aoyama, S.*; Ishii, T.*; Horita, M.*; Adachi, T.*; Horie, Y.*; Hokari, T.*
PNC TJ1060 92-001, 240 Pages, 1992/03
None
Horita, M.*; Furuichi, Mitsuaki*; Ito, K.*; Sudo, Ken*
PNC TJ7449 91-001VOL2, 406 Pages, 1991/05
no abstracts in English
Horita, M.*; Furuichi, Mitsuaki*; Ito, K.*; Sudo, Ken*
PNC TJ7449 91-001VOL1, 406 Pages, 1991/05
no abstracts in English
*; Shimo, Michito*; Aoki, Kenji*; Horita, M.*; Murata, Masatoshi*
PNC TJ1449 91-015, 128 Pages, 1991/04
None