| 放射性废物处置研究进展 |
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| 关键词:disposal of radioactive waste hydrogeology assessment of environment affects radionuclide transport experiments radionuclide transport models |
| 基金项目:国家自然科学基金项目(编号: 40911130505) |
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| 摘要: |
| Advances in Research on Disposal of Radioactive Waste |
| Disposal of radioactive wastes (DRW) will eventually hinder the sustainable development of nuclear energy. Safety DRW has become an issue that receives worldwide attentions. Aimed at tackling the exposure risk of radioactive waste transport in the groundwater system of disposal sites, this paper presents a review on DRW along with site selection, radionuclide transport experiments and numerical models. Safety of DRW can be achieved by disposal of radioactive wastes with a multi-barrier system. A disposal site should be located at an area near the place where the wastes are produced. The site investigation and assessment system should focus on aspects of environmental hydrogeology. Both lab and in-situ test should be considered for obtaining correct results and parameters for the transport of radionuclides in a groundwater system. Numerical models for radionuclides transport have made great progress through advection-dispersion and linear sorption (Kd) to multi-component reactive transport models. However, the numerical methods need improvement in dealing with heterogeneous media and chemical reactions, interactions between mineral dissolution/precipitation and hydrodynamic process, model validity as well as the capability of application to real cases. DRW in China has been relatively poorly studied and work needs to be improved in such aspects as site selection standard series, experimental techniques and modeling approaches. |
| YI Shu-ping,MA Hai-yi,ZHENG Chun-miao.2011.Advances in Research on Disposal of Radioactive Waste[J].Acta Geoscientica Sinica,32(5):592-600. |
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