作　　者： (段振亚）; (刘永阵）; (王凯）; (张洋）; (蓝竹军）; (许恩乐）;

机构地区： 青岛科技大学机电工程学院,青岛266061 清华大学国家环境保护大气复合污染来源与控制重点实验室,北京100084

出　　处： 《地球环境学报》 2017年第4期307-319,共13页

摘　　要： 大型露天堆料场在工业中应用广泛,但其在风致作用下产生的扬尘是大气颗粒物的重要来源,对周边半径为几千米内的局部区域的大气环境污染最为严重,研究在此小区域内的颗粒污染物的运动及扩散规律对于控制其污染具有重要意义。但目前国内外在此领域的研究还比较匮乏。鉴于上述原因,本文对国内外关于颗粒物在局部区域内的运动及扩散的相关文献资料进行了收集与分析,并结合笔者前期所开展的针对大型露天堆料场扬尘颗粒物现场测试、数值模拟和风洞试验研究,对预测大型露天堆料场料堆排放的颗粒物在风致作用下的扩散规律提出了几点建议,认为目前的研究重点应为构建扬尘中粒径小于50μm颗粒的扩散模型,同时加强风洞试验和现场测试的验证,以期为更好地研究和控制大型露天堆料场的扬尘污染提供一些有益的参考。 Background, aim, and scopes Large open-yard of stockpile, low cost and large capacity, is popular in the storage of bulk raw materials and industry waste residue, and the adverse environment effect is regarded as a big problem. The research on fugitive dust dispersion law from open-yard of stockpile is of great importance for controlling the pollution of it. However, the research is not sufficient. The previous researches mostly focus on the estimation of stockpile fugitive dust emission. Less research is done to find out the dust dispersion law. Materials and methods Therefore, a review of fugitive dust dispersion law from open-yard of stockpile is established. Representative results and outstanding contributions are summarized, and the unresolved issues for further study of the fugitive dust pollution law from open-yard of stockpile are discussed. Results Several important sites are chosen in the research of field measurement of representative papers to get the particulate matter for a special particle size. Via element analysis for the particulate matter, influences of the dust dispersion to the ambient air quality are obtained. Because of restrictions of the numbers of measurement sites and height, the data is less and the degree of conclusion stands on a level of speculation. In addition, other dust sources make a extensive disturb on the truth of result. The cost of field measurement is high and the procedure of element analysis is complicated. So it＇s difficult to carry on the field measurement and element analysis. However, field measurement is essential. It shows the true law of the dust dispersion of open-yard stockpile. It＇s a verification of our research. The key points of simulation research on the dust dispersion of open-yard of stockpile includes 3 aspects： （1） Accurate physical property data of material in open-yard stockpile should be obtained via experiments; （2） The force analysis of particle should be done; （3） All the conclusions should be verified via wind tunne

关 键 词： 大型露天堆料场 扬尘 扩散规律 研究进展