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海外の地下研究施設における研究内容の調査および研究課題の整理

The Planning of future research program of underground laboratories in overseas

本間 信之*; 棚井 憲治; 長谷川 宏*

not registered; Tanai, Kenji; not registered

本稿では、今後の幌延深地層研究センターにおける地下研究施設計画に反映することを目的として、海外の地層処分プロジェクトを対象に、その計画や実施中の試験などについて調査を行った。調査対象には、幌延計画への反映を考慮し、堆積岩系や沿岸部の地質環境における次のプロジェクトを選んだ。・スイス Mt.Terri Project(オパリナス粘土(頁岩))・フランス Bure URL(粘土質岩)・ベルギー Mol(ブーム粘土)・スウェーデン Aspo Hard Rock Laboratory(HRL)(花崗岩:沿岸部)・英国 Sellafield Rock Characterization Facility(RCF)(火山岩:沿岸部) 調査では特に人工バリア性能、施設設計施工、支保工、搬送定置、閉鎖などに関わる情報を幅広く収集した。これらの情報に基づき、個別の調査試験の目的、内容、成果について整理するとともに、調査試験の目的、反映先、相互の関連、実施順序などから、地下研究施設全体での戦略やねらい、流れなどを整理した。

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.

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