Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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A Study on Evaluation of the Ability to Reduce Stormwater Runoff of Blue-Green Roof for Flood Damage Reduction

홍수피해 저감을 위한 Blue-Green Roof의 강우유출량 저감 능력 평가에 관한 연구

  • Seung Won Lee (Team of Green Infrastructure Technology Testing, Jeollanam-do Environmental Industries Promotion Institute (JEIPI)) ;
  • Jihoon Seo (Team of Green Infrastructure Technology Testing, Jeollanam-do Environmental Industries Promotion Institute (JEIPI)) ;
  • Sung Min Cha (Team of Green Infrastructure Technology Testing, Jeollanam-do Environmental Industries Promotion Institute (JEIPI))
  • 이승원 (전라남도환경산업진흥원 그린인프라팀) ;
  • 서지훈 (전라남도환경산업진흥원 그린인프라팀) ;
  • 차성민 (전라남도환경산업진흥원 그린인프라팀)
  • Received : 2022.10.04
  • Accepted : 2022.12.28
  • Published : 2023.01.30
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Abstract

This study aimed to evaluate the ability to reduce flood damage caused by abnormal rainfall events due to climate change by utilizing a blue-green roof (BGF), a type of rooftop greening technology. For two buildings with the same roof area, a BGF was installed in the experimental group, a general roof was configured in the control group, and rainfall runoff was compared. A total of 10 rainfall events were tested and analyzed by classifying them into three rainfall classes (less than 10 mm, less than 100 mm, and more than 100 mm). There was a reduction of 100% in the case of 10 mm or less of rainfall, 84. 7% in the case of 100 mm or less, and 39.8% in the case of 100 mm or more. Although this study showed that a BGF was effective in reducing rainfall runoff, additional experiments and analyses of various factors affecting rainfall runoff reduction are needed to generalize the results of the study. This research methodology may be used to develop a method for evaluating the resilience of a BGF to flood damage due to climate change.

Keywords

Acknowledgement

본 연구는 광주녹색환경지원센터에서 지원받았습니다. (22-01-70-79-12)

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