不同土壤氡分布的数值模拟

摘要

The numerical computation of radon distribution in soils was implemented, considering 6 different types of homogeneous soils including sands, etc. And typical layered soil. Thereafter researches were mainly focused on factors which affect the distribution, such as diffusion coefficient, porosity, and rainfall. The situation of abnormal radon distribution in soil caused by radium distribution was also analyzed. The results show that the radon concentration increases with depth of soil.%通过考虑砂土等6种均匀土壤及典型层状土壤的情况,对土壤氡分布进行数值模拟,对扩散系数、孔隙度、降水等对土壤氡分布有影响的因素进行研究,并对因土壤中镭分布而致氡异常分布进行相应分析.分析发现,土壤中的氡浓度随土壤深度的增加而增大.