高架下街谷内可吸入颗粒物扩散状况的测量  

Measurement of Respirable Particulate Matter Diffusion under the Valley in Street Viaduct

作　　者：李志远[1] 赵敬德[1] 王宇彤[1] 冯寒立 

机构地区：[1]东华大学环境科学与工程学院

出　　处：《建筑热能通风空调》2016年第10期30-32,12,共4页Building Energy & Environment

基　　金：上海市自然科学基金项目(13ZR1401500)

摘　　要：为了对有高架路覆盖的街谷内可吸人颗粒物的扩散规律进行研究,对不同的高度、大气温度、植被覆盖程度以及有无高架桥的情况下可吸入颗粒物的扩散情况进行了实测。结果表明:街谷内沿高度方向可吸入颗粒物浓度先逐渐减小,超过高架路面高度后突增;随着大气温度的升高,街谷内颗粒物浓度逐渐降低。建筑物附近植被覆盖程度越大,对于三层楼以下的建筑物起到的阻挡作用越显著。In order to carry on the research on the law of the diffusion of the particles in street canyons with elevated roads, field measurements was conducted at different heights, the atmospheric temperature, the vegetation coverage as well as the case of an elevated bridge. The results show： along the height of the viaduct, the concentration of the particulate matter first gradually reduced and after the height of the viaduct, and there will be a sudden increase. With the increase of atmospheric temperature, the concentration of particulate matter in the street is gradually reduced. The greater the degree of vegetation coverage near the building, the more significant the barrier function of the building below the third floor building.

关 键 词：街道峡谷 高架桥 PM2.5 PMIO颗粒物浓度 实地测量 

分 类 号：X513[环境科学与工程—环境工程]