摘要
针对我国西北某放射性废物处置库选址研究,应用HYDRUS-1D程序,对入渗情景下239Pu在非饱和带的迁移趋势及其对地下水的潜在污染进行了数值预测和灵敏度分析。结果表明:在场地条件下溶解态239Pu迁移不会污染地下水,核素通过地下水途径迁移不会对生物圈产生不可接受的影响;对以吸附作用为延迟机制的放射性核素迁移,分配系数Kd的量度是关键性的。
In terms of the study on site selection of a radioactive waste disposal repository in northwest China, a numerical prediction of ^239Pu migration for potential groundwater pollution in the unsaturated zone was conducted with the HYDRUS-1D model. The results showed that the groundwater will not be contaminated by the migration of soluble ^239Pu. And there is little possibility that ^239Pu migration through groundwater path might have an unacceptable impact on eeosphere. Measurements of the distribution coefficient, Kd, are critical in the determination of sorption-induced retardation of radionuclide transport.
出处
《辐射防护》
CAS
CSCD
北大核心
2011年第3期168-173,共6页
Radiation Protection
关键词
^239Pu
放射性废物处置库
分配系数
数值预测
^239Pu
Radioactive Waste Disposal Repository
Distribution Coefficient
Numerical Prediction
