ZHAOFei,ZHANGShu-han,SANG Fei-fan,et al.Runoff Characteristics of Permeable Brick Pavement System[J].China Water & Wastewater,2022,38(15):133-138.
Runoff Characteristics of Permeable Brick Pavement System
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第15期
Page:
133-138
Column:
Date of publication:
2022-08-01
- Abstract:
- Permeable brick pavement is an important part of urban rainwater resources comprehensive utilization technology. Permeable brick paving on hardened ground improves the infiltration capacity of the underlying surface, increases the groundwater recharge, reduces the surface ponding, improves the local ecological environment, and plays a prominent role in urban rainwater control and utilization system. This paper analyzed the infiltration characteristics of permeable brick pavement and the law of rainfall runoff through artificial rainfall experiment. The infiltration process of permeable brick pavement could be generally divided into three stages during the process of rainfall, which followed the law of initial rainwater totally infiltrating and rainfall completely changing into runoff after the saturation of the pavement structure layer. The initial infiltration rate of pavement structure was related to rainfall intensity, while the stable infiltration rate was related to properties of soil and underlayer and preliminary moisture content. In addition, the calculation formula of permeable brick pavement surface dynamic runoff coefficient was further proposed based on rainfall, water storage capacity and soil infiltration capacity.
Last Update:
2022-08-01