沥青道路粗糙度对径流颗粒物冲刷输出特性的影响
Influence of asphalt road roughness on scour output characteristics of runoff particles
杜晓丽 1崔瀚武 2郑泽东 2田殿茜2
作者信息
- 1. 北京建筑大学城市雨水系统与水环境省部共建教育部重点实验室,北京 100044;北京建筑大学北京节能减排与城乡可持续发展省部共建国家协同创新中心,北京 100044
- 2. 北京建筑大学城市雨水系统与水环境省部共建教育部重点实验室,北京 100044
- 折叠
摘要
采用粗糙度量化沥青道路的表面特征,通过模型模拟、相关性分析等方法分析了道路表面粗糙度对降雨径流颗粒物冲刷输出特性的影响.结果表明:道路粗糙度、降雨强度是影响道路表面径流颗粒物冲刷输出过程的关键因素,道路粗糙度越低、降雨强度越大,道路表面径流颗粒物冲刷效应越强烈、场次降雨径流颗粒物累积冲刷量越大、径流颗粒物冲刷输出总体水平越高;道路粗糙度与降雨强度、径流历时共同影响径流颗粒物粒径分布,道路粗糙度为影响径流颗粒物粒径分布的主导因素,道路粗糙度越低、径流历时越长、降雨强度越大,径流中粒径不小于150 μm的颗粒物体积占比越高,粒径小于75 µm的颗粒物体积占比越低.
Abstract
The surface characteristics of asphalt roads were quantified by roughness,and the influence of road surface roughness on the scour output characteristics of runoff particles was analyzed by model simulation and correlation analysis.The results indicated that the road roughness and rainfall intensity were the key factors affecting the scour output of road surface runoff particles.The lower the road roughness and the higher the rainfall intensity,the stronger the scour effect of road surface runoff particles,the higher the cumulative scour amount of runoff particles in the rainfall event,and the higher the overall scour level of runoff particles.In addition,road roughness,rainfall intensity,and runoff duration all affected the particle size distribution in runoff,and road roughness was the dominant factor.The lower the road roughness,the longer the runoff duration and the higher the rainfall intensity,the higher the proportion of particles with size not smaller than 150 μm and the lower the proportion of particles with size smaller than 75 μm in road runoff.
关键词
道路粗糙度/降雨强度/径流颗粒物/冲刷规律/粒径分布Key words
road roughness/rainfall intensity/runoff particles/scouring law/particle size distribution引用本文复制引用
基金项目
国家重点研发计划(2021YFC3200700)
北京建筑大学金字塔人才培养工程项目(JDJQ20200302)
出版年
2024
国家科技期刊平台
NSTL
万方数据