摘要
为了进一步研究核素在孔隙介质中的迁移规律，本文将水动力弥散方程与核素在孔隙介质中非平衡吸附关系式相耦合，建立了非平衡吸附数值模式，并给出了非平衡吸附数值模式中吸附解吸速率参数的获取方法．为了检验所建模式与编制的程序的正确性，利用试验场（８５）Ｓｒ迁移的野外试验资料进行了计算，并与核素迁移平衡吸附数值模式的计算结果进行了对比．结果表明，二维非平衡吸附核素迁移数值模式能够更好地描述核素迁移实际．
With the view of further studying the migration pattern of radionuclide in porous media,a nonequilibrium sorption-desorption relation is coupled with hydrodynamic dispersion equation, and a nonequilibrium sorption numerical model is establishing.The method for the accluisition of sorption-desorption parameters used in the model is also given.In order to test the correctiveness of the established model and its computer code,the calculation concerned is made using the experimental data of(85)Sr obtained in the field test site, and then compared with the calculated results of nuclide migration equilibrium sorption numerical model.The comparison shows that the established model can describe the actual situation of nuclide migration in a better way.
出处
《应用生态学报》
CAS
CSCD
1996年第1期89-93,共5页
Chinese Journal of Applied Ecology
基金
中国辐射防护研究院与日本原子力研究所合作研究项目
关键词
放射生态学
核素迁移
非平衡吸附
数值模式
Nonequilibrium sorption
Numerical model
Sorption-desorption
Sorption rate coefficient
