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2025 Vol.58, Issue 9

Research Article

Evaluation of permeable pavement block performance on the urban water cycle

투수 포장 블록 성능이 도시 물순환에 미치는 영향 검토

Hyojung Leea
,
Jongmin Kimb*
,
Hyunsuk Shinc
이 효정a
,
김 종민b*
,
신 현석c
aPh.D Student Researcher, Department of Hydro Science and Engineering Research River Experiment Center, Korea Institute of Civil Engineering and Building Technology, Andong, Korea
bResearch Specialist, Department of Hydro Science and Engineering Research River Experiment Center, Korea Institute of Civil Engineering and Building Technology, Andong, Korea
cPresident, Busan Development Institute, Busan, Korea
a한국건설기술연구원 수자원하천연구본부 하천실험센터 학생연구원
b한국건설기술연구원 수자원하천연구본부 하천실험센터 전임연구원
c부산연구원 원장
*Corresponding Author
30 September 2025. pp. 721-733
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Abstract

Rapid changes in rainfall patterns due to climate change are intensifying urban water cycle challenges, especially during extreme storm events. In response, the application of Low Impact Development (LID) techniques has been increasingly promoted. This study evaluates the hydrological effectiveness of permeable pavement, a representative LID strategy. Laboratory experiments were conducted to assess its structural performance under different clogging conditions. These results were incorporated into a SWMM-LID model to simulate water cycle improvements across various watershed scales. Simulations analyzed changes in total evapotranspiration (TE), total infiltration (TI), total surface runoff (TR), and peak runoff. The results showed that hydrological effects varied depending on pavement type, coverage, and watershed characteristics. TE increased by over 70%, TI by over 79%, and TR decreased by more than 5%, confirming the effectiveness of permeable pavement. However, peak runoff showed no significant change, likely due to the flat terrain and characteristics of long-term rainfall patterns in the study areas. Interestingly, in some watersheds with naturally high infiltration capacity, a reduction in infiltration was observed, highlighting that hydrological outcomes can differ depending on land use, soil permeability, and spatial distribution of LID facilities. These findings suggest that LID strategies should be applied selectively based on watershed characteristics. Future studies should incorporate GIS-based spatial analysis, long-term performance evaluation, and institutional improvements for effective maintenance and debris management.

Keywords
Permeable pavement block
Permeability coefficient
Clogging
Urban water-cycle
LID

기후변화로 인한 강우 패턴의 급격한 변화는 도시 물순환 문제를 심화시키고 있으며, 이를 완화하기 위해 저영향개발(LID) 기법의 적용이 확대되고 있다. 본 연구는 대표적인 LID 기법인 투수 블록의 수문학적 효과를 평가하기 위해, 구조적 특성과 막힘 조건에 따른 성능 실험을 수행하고, 이를 기반으로 SWMM-LID 모형을 활용한 물순환 개선 효과를 모의하였다. 다양한 유역 규모를 대상으로 총증발산량(TE), 총침투량(TI), 총지표유출량(TR), 첨두유출량의 변화를 분석한 결과, 투수 블록의 형태, 적용 면적, 유역 특성에 따라 물순환 개선 효과에 차이가 나타났다. TE는 최대 70% 이상, TI는 79% 이상 증가하였고, TR은 최대 5% 이상 감소하는 등 효과가 확인되었으나, 첨두유출량은 유의미한 변화가 나타나지 않았다. 이는 완만한 지형 및 장기 강우 패턴 등의 영향으로 해석된다. 일부 유역에서는 자연 침투가 활발함에도 오히려 침투량이 감소하는 현상이 관찰되었는데, 이는 토지 이용, 토양 침투력, LID 시설의 공간적 분포에 따라 효과가 달라질 수 있음을 시사한다. 본 연구는 LID 시설의 일률적 적용보다는 유역 특성에 기반한 전략적 적용이 필요함을 강조하며, 향후에는 GIS 기반 공간분석, 장기 성능 검증, 유지관리 제도적 보완도 함께 고려되어야 할 것이다.

키워드
투수 포장 블록
투수계수
막힘
도시 물순환
저영향개발
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Information
  • Publisher :KOREA WATER RESOURECES ASSOCIATION
  • Publisher(Ko) :한국수자원학회
  • Journal Title :Journal of Korea Water Resources Association
  • Journal Title(Ko) :한국수자원학회 논문집
  • Volume : 58
  • No :9
  • Pages :721-733
  • Received Date : 2025-04-15
  • Revised Date : 2025-07-01
  • Accepted Date : 2025-07-15
  • DOI :https://doi.org/10.3741/JKWRA.2025.58.9.721
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