城郊道路交通带状多线源污染扩散模式研究

为研究适用于路面宽,等级高的城郊道路大气污染扩散模式,以Ｃａｌｉｎｅ－３有阴长线源污染扩散模式为基础,并以上海浦东新区道路网为实例,将带状线源的概念引入线源扩散模式研究,建立了新的带状多线源污染扩散模式,分析了气象条件,初始扩散,道路基本工程参数对大气污染扩散的影响,引用实例数据,对所建立的ＢＭＬＳＭ模式进行了检验,并与Ｃａｌｉｎｅ－２模式进行了对比。结果表明,采用本研究建立的带状多线源污染扩散模

Study on Belt Multi-linesource Dispersion Model for Suburban Roadway

In developing an atmospheric pollution dispersion model for wide roadway in suburban area of Shanghai, the concept of "Beit Line-source" was accepted in this paper. A new Belt Multi-linesource Model (BMLSM) was established and applied to the traffic network in Shanghai Pudong New Area, which was based on the study of Caline-3 finite linesource model. Effects of meteorological condition, pollution initial dispersion, and roadway engineering parameters on atmospheric with dispersion profile were discussed. Verification of the BMLSM predication with the observation data and model comparison with Calin 2 model were conducted. The results indicated that the average correlation coefficient between the value predicted by BMLSM and observation data was 0.83, and the average relative error was 30%. The precision of BMLSM was higher than that of Caline-2 model.