| 施工工地出口附近道路交通扬尘排放特征研究 |
| 摘要点击 4368 全文点击 1682 投稿时间：2006-11-01 修订日期：2006-12-31 |
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| 中文关键词 工地 施工扬尘 交通扬尘 排放因子 |
| 英文关键词 construction activity construction fugitive dust road fugitive dust emission factor |
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| 中文摘要 |
| 为了量化施工工地附近社会道路因施工运输车辆带泥及遗撒造成的二次交通扬尘，对4个典型工地出口2个方向社会道路尘负荷进行了采样分析，根据AP-42交通扬尘排放模型，计算和分析了工地出口附近道路交通扬尘排放特征.结果表明，工地出口附近道路尘负荷高于正常道路，随着距离工地出口长度的增加，尘负荷逐渐减小；工地出口2个方向共400 m道路上交通扬尘PM10排放因子为正常道路的2～10倍，因施工增加的排放量相当于422～3?800 m正常道路排放.根据以上结果，结合2002年北京市施工工地时空分布数据，经计算得出，2002年北京市城八区工地出口形成的二次扬尘相当于增加了道路总长度的59%. |
| 英文摘要 |
| Because of the mud/dirt carryout from construction activities, the silt loading of paved road nearby is higher and the fugitive dust emission is stronger. By sampling and laboratory analysis of the road surface dust samples,we obtain the silt loading (mass of material equal to or less than 75 micromaters in physical diameter per unit area of travel surface) of paved roads near construction activities. The result show that silt loading of road near construction activities is higher than “normal road”, and silt loading is negatively correlated with length from construction's door. According to AP-42 emission factor model of fugitive dust from roads, the emission factor of influenced road is 2～10 times bigger than “normal road”, and the amount of fugitive dust emission influenced by one construction activity is “equivalent” to an additional road length of approximately 422～3 800 m with the baseline silt loading. Based on the spatial and temporal distribution of construction activities, in 2002 the amount of PM10 emission influenced by construction activities in Beijing city areas account of for 59% of fugitive dust from roads. |
