원단위와 LID 시설규모 산정을 위한 상업지역과 위락시설지역의 유출율 분석

• Published in: 한국수처리학회지, 23(3) pp. 53 - 64
• Main Authors: 최동호, 정재운, 윤광식, 유승화, 범진아, 백상수
• Format: Journal Article
• Language: Korean
• Published: 한국수처리학회 30.06.2015
• Subjects: 토목공학
• ISSN: 1225-7192; 2289-0076
• DOI: 10.17640/KSWST.2015.23.3.53

In this study, runoff ratios of commercial area and public park were analyzed based on monitoring data. The imperviousness was 84∼85% for commercial area and 5∼37% for public park, respectively. National Institute of Environmental Research (NIER) guideline suggested weighted runoff ratio which use rainfall weighting factor to runoff ratio of four rainfall groups to assess nonpoint source pollution. The arithmetic mean runoff ratio of commercial area and public park were similar to median value, but the estimated runoff ratio by NIER method was higher than those by arithmetic mean and median. The estimated runoff ratios of commercial area and public park by NIER method, which would be used for unit load determination, were 0.73 and 0.42, respectively. The rainfall amount for design LID facilities size, which ranks 80%, was 19.5mm and corresponding runoff ratio of commercial area and public park were 0.67 and 0.25, respectively. Therefore, runoff ratio investigated in this study would be used for unit load estimation and storage volume design of LID facilities for commercial area and public park. KCI Citation Count: 0