南华大学学报（自然科学版）2026，Vol.40Issue(2)：49-56,8.DOI:10.19431/j.cnki.1673-0062.2026.02.006
气载放射性物质浓度时空分布及辐射剂量评估
Spatiotemporal distribution and dose assessment of airborne radioactive materials
摘要
Abstract
Nuclear facilities continuously release airborne radioactive materials during oper-ation.To comprehensively assess the environmental radiation risks posed by these materi-als,this paper develops an off-site atmospheric dispersion and dose assessment system based on the Lagrangian puff model.By coupling multidimensional meteorological fields with turbulence parameterization schemes,the system achieves accurate predictions of the spatiotemporal distribution of radionuclide concentrations under complex terrain conditions.Furthermore,by incorporating the latest dose conversion coefficients from the International Commission on Radiological Protection(ICRP),a dose calculation module covering four critical exposure pathways—air immersion,ground deposition,inhalation,and ingestion—was established,enabling an integrated assessment from source term emis-sion to public effective dose.Comparative validation with the standard model California Puff Model(CALPUFF)at a typical coastal site showed that the simulation errors for con-centration and deposition rates at 92%of the key receptor points were within 20%,dem-onstrating the high reliability of the system.This provides a technical tool compliant with international standards for environmental impact assessment and emergency response evalu-ation of nuclear facilities.关键词
大气扩散/拉格朗日烟团模型/辐射剂量评估/气载放射性物质/有效剂量Key words
atmospheric dispersion/Lagrangian puff model/radiation dose assessment/air-borne radioactive materials/effective dose分类
资源环境引用本文复制引用
赵智源,郭倩,陈珍平..气载放射性物质浓度时空分布及辐射剂量评估[J].南华大学学报（自然科学版）,2026,40(2):49-56,8.基金项目
湖南省自然科学基金青年项目资助(2021JJ40445) （2021JJ40445）
