2022 Volume 78 Issue 2 Pages I_241-I_246
This study focused on the introduction of permeable pavements on roadways as one of countermeasures against floods being intensified by climate change. And analyzed their flood control effects. Previous studies, which is for small rainfall events in the small watersheds, have ignored the rise in the groundwater level during infiltration of rainwater into the ground, horizontal infiltration in the ground, or drainage of rainwater stored in the pavement. In this study, a runoff analysis method that takes these factors into account was developed to analyze the flood control effects of permeable pavements for large rainfall events in large watersheds. The analysis revealed that the introduction of permeable pavements can have a certain flood control effect on future rainfall, and that this effect depends on the groundwater level conditions.
PROCEEDINGS OF HYDRAULIC ENGINEERING
