页岩介质中放射性核素迁移的实验研究及其数学模型  

THE EXPERIMENT RESEARCH AND MATHEMATIC MODEL OF RADIONUCLIDE MIGRATION IN SHALE MEDIA

作　　者：刘阳[1] 李水英[2] 李春江[3] 高宏成[3] 

机构地区：[1]吉林大学朝阳校区应用理学院,吉林长春130026 [2]中国原子能科学研究院,北京102431 [3]北京大学技术物理系,北京100871

出　　处：《长春科技大学学报》2001年第3期298-301,共4页Journal of Changchun University of Science and Technology

摘　　要：在自行设计的实验装置中进行了放射性核素13 1I在页岩介质中的扩散、渗透 -弥散的实验。采用渗透法及扩散法获得了实验曲线并计算出弥散系数、阻滞系数、孔隙度等参数。实验表明13 1I在页岩介质中为弱吸附核素 ,其阻滞系数较小。在此实验基础上建立了放射性核素13 1I在页岩介质中的一维迁移物理模型及数学模型。结果表明13 1I随地下水迁移得比较慢 ,因此页岩对13We did radio nuclide 131 I transport diffusion experiment and permeability-dispersion experiment in shale media. The instruments we used is designed and made by ourselves. Using permeated method and diffusive method we got the experiment curve and calculated the parameters and coefficients such as dispersion coefficient, retardation factor, porosity from the experiment curve. The experiment indicates that 131 I is a weak absorption nuclide, and its retardation is not big. We also build one dimension mathematical model on the basis of this experiment. The result shows tells that nuclide 131 I transport in shale media is slower so the shale media can resist the nuclide 131 I migration.

关 键 词：放射性核素 页岩介质 迁移模型 渗透法 扩散法 地下水 孔隙度 阻滞系数 

分 类 号：X591[环境科学与工程—环境工程]