| 均匀覆盖层中氡迁移的数值模拟 |
| |
| 引用本文： | 刘菁华,王祝文,田钢,王晓丽.均匀覆盖层中氡迁移的数值模拟[J].地球物理学报,2007,50(3):921-925. |
| |
| 作者姓名： | 刘菁华 王祝文 田钢 王晓丽 |
| |
| 作者单位： | 1.吉林大学地球科学与技术学院，地球信息探测仪器教育部重点实验室，长春130026 2 浙江大学地球科学系，杭州〓310027 |
| |
| 基金项目： | “九五”国家重大科学工程(计高技[1999]1423号)项目资助 |
| |
| 摘 要： | 氡能从地下深部运移到地表，可带来反映地下地质状态的信息.本文以氡在均匀覆盖层中的迁移过程为对流-扩散方式作为理论基础，推导了二维氡浓度微分方程，用有限差分方法计算了无限氡源层、有限单氡源层、有限双氡源层在均匀覆盖层中氡浓度的数值解，以二维断面的形式展示了氡的分布，其结果与野外实测相符.
|
| 关 键 词： | 氡迁移 对流-扩散 数值模拟 有限差分 |
| 文章编号： | 0001-5733（2007）03-0921-05 |
| 收稿时间： | 2006-6-15 |
| 修稿时间： | 2006-06-15 |
Numerical simulation for radon migration in the homogeneous overburden |
| |
| LIU Jing-Hua,WANG Zhu-Wen,TIAN Gang,WANG Xiao-Li.Numerical simulation for radon migration in the homogeneous overburden[J].Chinese Journal of Geophysics,2007,50(3):921-925. |
| |
| Authors: | LIU Jing-Hua WANG Zhu-Wen TIAN Gang WANG Xiao-Li |
| |
| Institution: | 1.Geo Exploration College of Sci. & Tech., Jilin University, Ministry of Education Key Laboratory of the Earth Information Survey Instrument, Changchun 130026, China 2 Department of Earth Sciences, Zhejiang University, Hangzhou 310027, China |
| |
| Abstract: | Radon can be transported from deep earth to ground surface and carry information reflecting the underground geological status. Based on the theory of convection and diffusion which play an important role in radon migration, this paper derived the 2-dimensional differential equation for radon concentration distribution, calculated the numerical solution for the infinite radon source layer, single and double abnormality radon source in the homogeneous overburden by making using the method of finite difference. The radon distributions in the homogeneous overburden were shown in 2-dimensional cross sections. The results were in agreement with the field measurements. These conclusions provided certain theoretic basis for interpreting the radon migration in overburden soil. |
| |
| Keywords: | Radon migration Convection and diffusion Numerical simulation Finite difference |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《地球物理学报》浏览原始摘要信息 |
| 点击此处可从《地球物理学报》下载免费的PDF全文 |
