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2024 Vol.57, Issue 11 Preview Page

Research Article

Case study on urban water cycle improvement in Andong City using the SWMM-LID model

SWMM-LID 모형 기반 안동시 도시 물순환 개선 효과 사례연구

Jaehwan Yooa
,
Byeungmin Limb
,
Juhyeong Shinc
,
Byunghyun Kimd*
유 재환a
,
임 병민b
,
신 주형c
,
김 병현d*
aPh.D Course, School of Architectural, Civil, Environmental and Energy Engineering, Kyungpook National University, Daegu, Korea
bGeneral Director, Water Energy Research Center, K-water Research Institute, Daejeon, Korea
cManager, Water Cycle Business Team, Andong Office, Korea Water Resources Corporation, Andong, Korea
dProfessor, Department of Civil Engineering, Kyungpook National University, Daegu, Korea
a경북대학교 건설환경에너지공학부 박사과정
bK-water 연구원 에너지연구소 검사위원
cK-water 안동권지사 물순환사업부 과장
d경북대학교 토목공학과 교수
*Corresponding Author
30 November 2024. pp. 897-910
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Abstract

As global warming accelerates, the frequency and intensity of localized heavy rainfall events are increasing, leading to severe urban flooding and substantial inundation damage downstream. Urban areas with high impervious surfaces are particularly vulnerable, as rapid stormwater runoff during rainfall exacerbates flood risks. This study investigates the runoff reduction effects of Low Impact Development (LID) techniques applied through the Storm Water Management Model (SWMM) to mitigate urban runoff. Andong City Hall and Talchum Park in Andong City were selected as study sites to compare water balance changes before and after LID installation. The analysis revealed that after implementing LID techniques, evaporation increased by 9.8% to 12.5%, infiltration increased by 111.0% to 139.2%, and runoff decreased by 31.8% to 38.8%. These results indicate that LID techniques effectively enhance water evaporation and infiltration, improving the water cycle in highly impervious areas and mitigating urban flooding and inundation damage.

Keywords
Probability rainfall
SWMM
LID
Rainfall-Runoff
Water cycle

최근 지구온난화로 인한 기후변화가 가속화되면서 국지성 호우의 빈도와 강도가 증가하고 있다. 이는 도시홍수 및 하류 지역의 심각한 침수 피해로 이어지고 있으며, 이에 대한 효과적인 대응책이 요구되는 실정이다. 특히 불투수율이 비교적 높은 도시 지역에서는 강우 시 유출량이 급격히 증가하여 홍수 위험을 가중시킨다. 본 연구에서는 도시 지역에서의 유출량을 저감시키고자 SWMM (Storm Water Management Model)의 저영향개발(Low Impact Development, LID) 기법을 이용하여 유출량 저감 효과를 분석하고자 하였다. 연구 유역으로 안동시에 위치한 안동시청과 탈춤공원을 선정하였고 LID 시설 설치 전후 물수지 변화를 비교 분석하였다. 분석 결과, LID 기법을 도입한 후 증발량은 9.8%~12.5%, 침투량은 111.0%~139.2% 증가하였고 유출량은 31.8%~38.8% 감소하는 것으로 나타났다. 이는 LID 기법이 물의 증발과 침투를 촉진시켜 불투수율이 높은 지역에서 물순환 개선과 도시 홍수 및 침수 피해 저감에 효과가 있음을 나타내고 있다.

키워드
확률강우량
SWMM
LID
강우-유출
물순환
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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 : 57
  • No :11
  • Pages :897-910
  • Received Date : 2024-07-09
  • Revised Date : 2024-09-30
  • Accepted Date : 2024-10-30
  • DOI :https://doi.org/10.3741/JKWRA.2024.57.11.897
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