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应用生态学报 ›› 1996, Vol. 7 ›› Issue (1): 89-93.

• 研究论文 • 上一篇    下一篇

核素迁移的二维非平衡吸附数值模式研究

王金生1, 李书绅1, 王志明1, 郭择德1, 陈家军2   

  1. 1. 中国辐射防护研究院, 太原 030006;
    2. 国家环境保护局, 北京 100035
  • 收稿日期:1995-04-11 修回日期:1995-08-03 出版日期:1996-01-25 发布日期:1996-01-25
  • 基金资助:

    中国辐射防护研究院与日本原子力研究所合作研究项目

Two-dimensional nonequilibrium sorption numerical model of radionuclide migration

Wang Jinsheng1, Li Shushen1, Wang Zhiming1, Guo Zede1, Chen Jiajun2   

  1. 1. China Institute for Radiation Protection, Taiyuan 030006;
    2. National Environmental Protection Agency, Beijing 100035
  • Received:1995-04-11 Revised:1995-08-03 Online:1996-01-25 Published:1996-01-25

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85Sr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.

关键词: 非平衡吸附, 数值模式, 吸附解吸, 吸附速率参数, 露水发生频率, 露水凝结时段, 黄土丘陵区, 气象因素

Abstract: 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 of85Sr 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.

Key words: Nonequilibrium sorption, Numerical model, Sorption-desorption, Sorption rate coefficient, dew condensation time, dew occurrence frequency, loess hilly region, meteorological factors