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地質・気候関連事象に関するFEPデータベースの整備; 隆起・沈降・地震活動・気候変動(受託研究)

Development of FEP database for geological and climatic disruptive events; Uplift, subsidence, earthquake activity, and climate change (Contract research)

酒井 隆太郎; 武田 聖司; 木村 英雄; 松葉 久*

Sakai, Ryutaro; Takeda, Seiji; Kimura, Hideo; Matsuba, Hisashi*

高レベル放射性廃棄物の地層処分の安全性の評価においては、長期にわたる地震活動や火山活動など地質・気候関連事象の外的要因による地下水環境への影響を想定しておく必要がある。このため、それらの条件や現象,安全性への影響など多岐に渡る情報を体系化し、外的要因を含むシナリオ構築を進めることが重要である。本研究では、シナリオ整備のため、地質・気候関連事象のうち、地震活動,隆起・沈降,気候変動について、事象の発生から処分システムに至るまでのTHMCに関する影響の伝搬プロセスを具体化し、FEP相関関係図を含むFEPデータベースを作成することにより、安全性への影響の可能性について体系的な整理を行った。

In the safety assessment for a geological disposal of radioactive waste such as high-level radioactive waste, it is necessary to estimate the hydrological environmental changes affected by external factors such as long-termed earthquake activity and volcanic activity. Therefore it is important to perform the informations including a wide range of future processes and conditions of engineered barriers and geosphere in a systematic manner and to construct scenarios considering external factors. Generation of geological and climatic disruptive events such as earthquake activity, volcanic activity, uplift, subsidence, climatic change and sea-level change and propagation process of their impacts and their types are needed to be clarified in order to understand the phenomena of their influence on a disposal system in case of our country. Japan Atomic Energy Agency started to develop FEP database including the correlation of FEPs and FEP data sheet.

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