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- Title
高放废物地质处置核素迁移模拟方法研究.
- Authors
凌辉; 王驹; 陈亮; 刘旭东; 马明清
- Abstract
Simulation of the migration process of radionuclides in multibarrier system is an important part of safety assessment for geological disposal of high-level radioactive waste. In this paper, the migration process of radionuclide was generalized based on the requirements of safety assessment over ten thousand years and the differences of the migration process of radionuclide in different elements of the multibarrier system. Based on the simplified migration process of radionuclide, the mathematical models of radionuclide transport through decay, diffusion, adsorption, convection and matrix diffusion were established, including cell pathway model, aquifer pathway model and pipe pathway model. The process of radionuclide transport in porous and fractured media was simulated by using different types of models and uncertainty analysis module. The simulation method for radionuclide transport proposed in this paper can simulate the whole process of radionuclide migration and conduct uncertainty analysis in multibarrier system, providing a feasible solution for long-term safety assessment for geological disposal of high-level radioactive waste.
- Subjects
RADIOACTIVE wastes; RADIOACTIVE waste disposal; RADIOISOTOPES; POROUS materials; GEOLOGICAL carbon sequestration; AQUIFERS; MATHEMATICAL models; ADSORPTION (Chemistry)
- Publication
World Nuclear Geoscience, 2023, Vol 40, p654
- ISSN
1672-0636
- Publication type
Article
- DOI
10.3969/j.issn.1672-0636.2023.S1.025