AERMOD模型在铀矿冶大气环境影响评价中的应用

Application of AERMOD model in environmental impact assessment of atmosphere forecasting in uranium mining and mill

以国内某铀矿山面源源项为研究对象,介绍AERMOD模型运行流程、原理和所需资料,并与Y30AIR扩散模型进行了对比验证。结果表明:AERMOD模型可计算得到网格和居民点空气中核素浓度,并能够绘制等值线分布图,具有更多实用功能,满足铀矿冶行业环境评价标准要求,适用性良好;AERMOD对面源源项采取的分段积分方式,与Y30AIR的虚点源法相比,计算原理较先进,计算结果更为精确。

With an area source of one uranium mine as study subject,operation flow path,principle and necessary materials of AERMOD in the EIA of uranium mining and mill are introduced,and the model was compared and was verified with another diffusion model Y30 AIR.The result shows that AERMOD can give radioelement concentration of grid area and resident point atmosphere,and can draw isoclines of distribution curve.The AERMOD has more practical functions which can meet the requirement of industry standard completely and has good applicability.AERMOD takes different section integral methods based on the distance of area source and calculation point,compared with virtual point method of Y30 AIR,the result of AERMOD is more accurate and advanced.