OUYANGYou,PANXing-yao,YANGMo-yuan,et al.Water Balance of Permeable Pavement under Different Rainfall Conditions[J].China Water & Wastewater,2023,39(15):127-131.
Water Balance of Permeable Pavement under Different Rainfall Conditions
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第15期
Page:
127-131
Column:
Date of publication:
2023-08-01
- Keywords:
- permeable pavement; lysimeter; moisture content of soil; evaporation
- Abstract:
- Permeable pavement is one of the commonly used low impact development technologies, which can regulate runoff and replenish groundwater. This paper monitored the rainfall, soil moisture, deep seepage, gravel outflow and evaporation by means of lysimeter and other equipments, so as to deeply understand the hydrological transformation process and identify the hydrological transformation law of permeable pavement. In the two monitoring time series of natural rainfall and artificial rainfall, the gravel layer only produced outflow in the artificial rainfall with intensity of 98 mm/h, indicating that the runoff reduction performance of permeable pavement was good. Deep seepage in natural rainfall and artificial rainfall accounted for 75% and 91% of rainfall loss, respectively. It was the main water loss item of permeable pavement, and most of the rainwater intercepted by permeable pavement seeped back to replenish groundwater. The moisture content of the monitored soil in the two layers of the replaced soil layer was consistent, and the response to rainfall was strong. However, the response to rainfall of the three monitoring soil layers in the raw soil layer decreased with the increase of soil depth.
Last Update:
2023-08-01