期刊论文

Research on the Migration Mechanism of Radionuclide in Floating Nuclear Power Plant in the Ocean

中文

南华大学学报(自然科学版)

1673-0062

2020

34

1

29-34,67

10.19431/j.cnki.1673-0062.2020.01.005

本校为第一机构

为了研究放射性核素泄露到海洋中的迁移规律,针对浮动核电站在海上发生严重事故这一情况,提出了基于瞬时点源约瑟夫模型的改进核素迁移模型,考虑海洋中放射性核素衰变和浮动核电站移动这两个因素。并以核素137Cs为例,研究核素137Cs在发生核事故后在海洋中的迁移扩散机理。研究结果表明浮动核电站发生核事故后,放射性核素浓度的空间分布呈现椭圆形,且沿着船舶运动轨迹方向的放射性核素浓度比其垂直方向上的浓度高,并向四周递减扩散。改进的核素迁移模型可为海洋应急监测工作提供参考,实现对浮动核电站核事故发生后应急监测的研究。

In order to study the migration law of radionuclide leaking into the ocean after a serious accident at a floating nuclear power plant,an improved nuclide migration model based on the instantaneous point source Joseph model is proposed,considering the radionuclide decay in the ocean and the floating nuclear power plant movement.Taking the 137Cs as an example,the mechanism of migration and diffusion of nuclide 137Cs in the ocean after a nuclear accident was studied.The results show that the spatial distribution of radionuclide concentration appea...