Role of urban surface roughness in road-deposited sediment build-up and wash-off
文献类型：期刊论文
| 作者 | Zhao, Hongtao ; Jiang, Qian; Xie, Wenxia; Li, Xuyong; Yin, Chengqing
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| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2018-05-01 |
| 卷号 | 560页码:75-85 |
| 关键词 | Road surface roughness Asphalt and concrete surface Build-up and wash-off First flush effect Street cleaning effectiveness |
| ISSN号 | 0022-1694 |
| 文献子类 | Article |
| 英文摘要 | Urban road surface roughness is one of the most important factors in estimation of surface runoff loads caused by road-deposited sediment (RDS) wash-off and design of its control measures. However, because of a lack of experimental data to distinguish the role of surface roughness, the effects of surface roughness on RDS accumulation and release are not clear. In this study, paired asphalt and concrete road surfaces and rainfall simulation designs were used to distinguish the role of surface roughness in RDS build-up and wash-off. Our results showed that typical asphalt surfaces often have higher depression depths than typical concrete surfaces, indicating that asphalt surfaces are relatively rougher than concrete surface. Asphalt surfaces can retain a larger RDS amount, relative higher percentage of coarser particles, larger RDS wash-off loads, and lower wash-off percentage, than concrete surfaces. Surface roughness has different effects in RDS motilities with different particle sizes during rainfall runoff, and the settleable particles (44-149 mu m) were notably influenced by it. Furthermore, the first flush phenomenon tended to be greater on relatively smooth surfaces than relatively rough surfaces. Overall, surface roughness plays an important role in influencing the complete process of RDS build-up and wash-off on different road characteristics. (C) 2018 Published by Elsevier B.V. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/40653]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhao, Hongtao,Jiang, Qian,Xie, Wenxia,et al. Role of urban surface roughness in road-deposited sediment build-up and wash-off[J]. JOURNAL OF HYDROLOGY,2018,560:75-85. |
| APA | Zhao, Hongtao,Jiang, Qian,Xie, Wenxia,Li, Xuyong,&Yin, Chengqing.(2018).Role of urban surface roughness in road-deposited sediment build-up and wash-off.JOURNAL OF HYDROLOGY,560,75-85. |
| MLA | Zhao, Hongtao,et al."Role of urban surface roughness in road-deposited sediment build-up and wash-off".JOURNAL OF HYDROLOGY 560(2018):75-85. |
入库方式： OAI收割
来源：生态环境研究中心
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