王莹,李成名,赵占杰,刘振东,王飞,刘坡

• 1:中国测绘科学研究院
• 2:山东科技大学测绘科学与工程学院

摘要(Abstract)：

机动车尾气排放已经成为城市空气污染的主要原因之一,为了更好地了解机动车尾气扩散,在GIS领域为机动车尾气的治理提供帮助,该文基于CALINE4模型对城市道路中机动车尾气的扩散特性进行研究。通过ENVI-met软件模拟验证了建筑物对污染气体扩散的显著影响,在CALINE4模型的基础上综合考虑了道路两侧建筑物对机动车尾气的反射作用和阻塞作用,结合道路的街谷高宽比和阻塞比的概念,提出了一种在建筑物影响下CALINE4模型中扩散参数的修正方案,并定性分析了建筑物对模型中扩散参数的影响以及对机动车尾气扩散过程的影响。分析结果表明,建筑物对机动车尾气的扩散有明显的反射与阻塞作用,尤其在建筑密集的区域会产生二者的叠加,使该区域污染物浓度分析更加复杂。

关键词(KeyWords)： 机动车尾气;CALINE4;扩散因子;高宽比;建筑密度

Abstract:

Keywords:

基金项目(Foundation): 基础测绘项目(A1705);; 国家自然科学基金项目(41871375);; 中央级公益性科研院所基本科研业务费项目(7771720)

作者(Author): 王莹,李成名,赵占杰,刘振东,王飞,刘坡

DOI: 10.16251/j.cnki.1009-2307.2019.08.020

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