Modeling of radionuclide migration through fractured rock in a HLW repository with multiple canisters

高レベル放射性廃棄物処分場の複数固化体を対象とした亀裂性岩盤中の核種移行モデル

Lim, D.-H.*; 内田 雅大; 畑中 耕一郎; 澤田 淳 

Lim, D.-H.*; Uchida, Masahiro; Hatanaka, Koichiro; Sawada, Atsushi

An integrated numerical model for groundwater flow and radionuclide migration analyses in a water-saturated HLW repository with a multiple-canister configuration is developed by incorporating the heterogeneity of fractured host rock based on the previous multiple-canister model. The current model enables to investigate the effects of heterogeneous fractured host rock on water flow and nuclide migration for the different configurations of multiple canisters, and to optimize the repository design parameters in terms of release of nuclides from the repository.