| 不同施工阶段扬尘污染特征研究 |
| 摘要点击 3941 全文点击 2301 投稿时间：2006-11-01 修订日期：2007-04-20 |
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| 中文关键词 建筑工地 施工阶段 扬尘 降尘 |
| 英文关键词 construction sites construction phase fugitive dust dust fall |
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| 中文摘要 |
| 以北京城近郊区40多个建筑工地为实验工地，以降尘作为施工扬尘监测指标，对不同施工阶段的扬尘污染规律进行了研究,对不同施工阶段自身降尘浓度数据进行频率分布统计.结果表明，挖槽阶段相比结构和装修的施工扬尘污染更加严重；挖槽、装修和结构阶段自身降尘浓度＞50 t/(km2·30 d)的概率分别为16%、16%和3%，挖槽和装修阶段比结构阶段更容易发生高强度施工扬尘污染；不同施工阶段都遵循春季施工扬尘污染强度明显大于夏、秋、冬季，以及冬季略大于夏、秋季的规律；不同施工阶段的扬尘污染强弱关系非常明显，扬尘污染强度比值为，挖槽∶结构∶装修等于100∶67∶87. |
| 英文摘要 |
| More than forty construction sites were selected as experimental fields in urban districts and near suburbs of Beijing. Fugitive dust from construction sites was monitored by dust fall. The characteristics of fugitive dust pollution in different construction phases were studied. The frequency distribution of relative dust fall date in different construction phases were statistically analyzed,and the results show that fugitive dust pollution in earthwork phase is more serious than those in structure and decoration phases. There are higher probabilities of high strength fugitive dust pollution in earthwork and decoration phases comparing with structure phase,and the probabilities of relative dust fall which is more than 50 t/(km2·30 d) are 16%，16% and 3% respectively. Different construction phases all comply with the laws that fugitive dust pollution strength in spring is bigger than summer,autumn and winter obviously, and winter is bigger than summer and autumn appreciably. There are obvious relation of fugitive dust pollution strength in different construction phases,and the ratio of pollution strength in earthwork，structure and decoration phases equals to 100∶67∶87. |
