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http://dx.doi.org/10.9715/KILA.2012.40.5.140

Estimation of Appropriate Infiltration Rate and the Effects of the Flowerbed Type Infiltration System  

Han, Young-Hae (Eco-Arche Institute of Ecological Urban Design and Architecture)
Lee, Tae-Goo (Dept. of Architecture Engineering in Semyung University)
Publication Information
Journal of the Korean Institute of Landscape Architecture / v.40, no.5, 2012 , pp. 140-147 More about this Journal
Abstract
This study developed a flowerbed type infiltration system that could control the amount of runoff discharge under a certain level estimated its proper design infiltration rate, and analyzed the effects of its implementation. Analyzing the performance of infiltration system is the one of the essential processes that should be under review to predict its effects after implementation when a rainwater infiltration system is included in a district-based plan. To estimate the unit design infiltration rate of this system, the runoff decrease effect was analyzed by varying the unit infiltration rate of the system applied to the parking lot adjacent to the Korea Institute of Construction Technology laboratory building by using a water balance analysis program. After varying the unit design infiltration to $0.1{\sim}3m^3/m^2.day$ to analyze the variation in the rate of runoff, 80% of the runoff was infiltrated at $1.0m^3/m^2.day$, and the unit infiltration design rate at the time was 0.0416(m3/m2.hr). It was also found that the unit design infiltration rate obtained from a field infiltration test of the developed system was about $0.045m^3/hr$. Based on this study, it was possible that infiltration rate is estimated to consider the economic scale and environmental effect. It is significant to apply the spatial plan of rainwater infiltration system as green infrastructure.
Keywords
Hydrologic Analysis; Runoff Discharge; Green Infrastructure; Field Infiltration Experiments;
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