The Single Deposit Scale Scenario at Granite Area in A Long-Term Safety Assessment of A Radioactive Waste Repository

[摘要] Deep geological disposal is internationally accepted as a feasible and safe way to dispose of high-level radioactive waste (HLW). Long-Term safety assessment of a radioactive waste repository is vital to building confidence in safety of geological disposal of radioactive waste. Many countries with nuclear power industries have carried out this work. The aim of this paper is to study the influence by a fracture intersecting the deposition hole or excavation damaged zone at repository located in granite area. Furthermore, it is also of interest for addressing important aspects of the internal evolution of the canister. This paper analysed two representative scenarios for the single deposit scale scenario at granite area. These results show that the influence of the fracture zone is enormous. The convective transport mass is far more than the diffusive transport mass. Moreover, the leading path of convective is the fracture zone. The transport mass which across the granite boundary is very little. These results also a convenient case for the construction of final geological repositories in China

[发布机构] CNNC Key Laboratory on Geological Disposal of High-level Radioactive Waste, Beijing Research Institute of Uranium Geology, Beijing; 100029, China^1

[效力级别] 生态环境科学 [学科分类] 环境科学（综合）

[关键词] Convective transport;Deep geological disposal;Diffusive transport;Excavation damaged zones;Geological disposals;High level radioactive wastes;Nuclear-power industry;Radioactive waste repository