Abstract The structural stability of a waste package is essential for containing radioactive waste for the long term in a repository. A silo-type disposal facility would require more severe verification for the structural integrity, because of radioactive waste packages staked with several tens of meters and overburdens of crushed rocks and shotcretes. In this study, structural safety was analyzed for a silo-type repository, located approximately 100 m below sea level in Gyeongju, Korea. Finite element simulation was performed to investigate the influence of the loads from the backfilling materials and waste package stacks on the mechanical stress of the disposed of wastes and containers. It was identified that the current design of the waste package and the compressive strength criterion for the solidified waste would not be enough to maintain structural stability. Therefore, an enhanced criterion for the compressive strength of the solidified waste and several reinforced structural designs for the disposal concrete container were proposed to prevent failure of the waste package based on the results of parametric studies.

中文翻译：

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原始文章结构稳定性分析 wWaste pPackages cContaining lLow- and iIntermediate-lLevel rRadioactive wWaste in a sSilo-type rRepository

摘要 废物包的结构稳定性对于在处置库中长期容纳放射性废物至关重要。筒仓式处置设施需要对结构完整性进行更严格的验证，因为放射性废物包有几十米厚，覆盖有碎石和喷射混凝土。在这项研究中，分析了位于韩国庆州海平面以下约 100 m 的筒仓式储存库的结构安全性。进行有限元模拟以研究来自回填材料和废物包装堆的载荷对已处置废物和容器的机械应力的影响。现已确定，目前的废物包装设计和固化废物的抗压强度标准不足以维持结构稳定性。因此，基于参数研究的结果，提出了固化废物抗压强度的增强标准和处置混凝土容器的几种加固结构设计，以防止废物包装失效。