基于AERMOD模型的锡林浩特地区露天煤矿粉尘排放的模拟分析

The simulation from surface coal dust emissions in Xilinhot region based on AERMOD model

本研究是对AERMOD大气扩散模型在草原地区使用情况进行验证。本文以内蒙古典型草原区一大型露天煤矿及周围为研究区,通过使用"反推法"得到粉尘的源强,分别模拟得到该区的七月期间平均浓度、七月最大日浓度、七月最大小时值浓度三个尺度的数据。通过对该研究区中粉尘含量七月的平均模拟值与实测值比较,两者相差较小,在误差允许范围内。通过本研究证明,AERMOD扩散模型能够用于草原区的粉尘扩散研究,并且能够直观的反映草原地区开矿所产生的粉尘的分布情况。该研究能为政府部门制定相关标准提供一些意见。

This study is to verify the use of AERMOD diffusion model in the prairie region. In this paper,choos-ing the study area at the surrounding area in a large opencast coal mine of Inner Mongolia steppe, by using the Sourceintensity measured by the concentration of the resulting thrust reversers site,three-hour value scale data simulatedthat during the July average area concentration,July maximum daily concentrations and July the largest concentra-tion. we found that,a difference is small,the error is within the allowable range through compared between the averagesimulated in July and measured values. Through this research shows,AERMOD diffusion model can be used to studythe diffusion of dust in grassland area,and can directly reflect the distribution of mining dust in grassland areas. Thestudy could provide some advice to government departments to formulate standards.