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KMID : 1024520150240081065
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Journal of the Environmental Sciences
2015 Volume.24 No. 8 p.1065 ~ p.1073
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Water Balance Estimate of LID Technique for Circulating Urban Design
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Kang Sung-Hee
Heo Woo-Myung
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Abstract
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Urbanization can be significantly affected the hydrologic cycle by increasing flood discharge and heat flux. In order to mitigate these modifications in urban areas, Low Impact Development (LID) technique has been designed and applied in Korea. In order to estimate runoff reduction rate using SWMM LID model, the characteristics of five LID techniques was firstly analyzed for water balance. Vegetated swale and green roof were not reduce flood discharge nor infiltration amount. On the other hand, porous pavement and infiltration trench were captured by infiltration function. The flood reduction rate with LID is substantially affected by their structures and properties, e.g., the percentage of the area installed with LID components and the percentage of the drainage area of the LID components.
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KEYWORD
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Urban design, Development, LID, Runoff reduction
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