在强烈的降雨和高沉积物质下,了解道路排水系统中的沉积物冲洗:来自大型建模设施的见解
C A Zafra-Mejía1, D Hernández-Medina1, J Suárez2
1Grupo de Investigación en Ingeniería Ambiental-GIIAUD, Universidad Distrital Francisco José de Caldas, Bogotá E-111711, Colombia.
The Science of the total environment
|December 27, 2024
概括
这项研究模拟了在暴雨期间道路表面碎片 (RDS) 的冲洗情况. 在控制细微的RDS污染方面,在人洞的干预是最有效的,其次是沟和道路.
科学领域:
- 环境工程 环境工程
- 水文学的水文学
- 水质管理水质管理
背景情况:
- 道路表面碎片 (RDS) 对排水系统构成重大污染风险.
- 了解RDS冲洗动态对于有效的雨水管理至关重要.
研究的目的:
- 在模拟的强降雨和高RDS质量条件下分析路面碎片 (RDS) 冲洗.
- 评估不同排水系统组件在管理RDS污染方面的有效性.
主要方法:
- 利用1:1尺度的物理建模设施来模拟RDS冲洗.
- 测试了两个降雨强度 (30/50 mm/h) 和三个初始RDS质量 (100/150/200 g/m2).
- 在道路 (RW),沟 (GP) 和人坑 (MH) 中测量累积和排放的RDS质量.
主要成果:
- 对于精细的RDS (<63微米),通道 (MH) 的干预效率最高 (59.2%),其次是沟 (GP) (31.2%) 和道路 (RW) (9.6%).
- 模拟确定了RDS在RW上的质量限制,由GP移除,并排入MH.
- 确定尺寸分数 (<63微米和5001000微米) 作为分别细微和粗RDS冲洗的代表.
结论:
- 人口干预对于控制排水系统中RDS细污染至关重要.
- 沟在RDS去除中发挥着重要作用,对于粗细分数的效率各不相同.
- 该研究提供了改善道路清洁策略和排水系统管理的基本数据.
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