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2025 Vol.58, Issue 12 Preview Page

Research Article

Development of a decision support framework for enhancing the design performance of urban underground infrastructure

도시 지하인프라의 설계 성능 향상을 위한 시나리오기반 의사결정 지원 프레임워크 개발

Young Hwan Choia
,
Seung Min Sungb
,
Hui Geun Kwonc
,
Teagyun Kimd*
최 영환a
,
성 승민b
,
권 희근c
,
김 태균d*
aAssociate Professor, Department of Civil and Infrastructure Engineering, Gyeongsang National University, Jinju, Korea
bM.S. Student, Department of Civil and Infrastructure Engineering, Gyeongsang National University, Jinju, Korea
cPh.D. Student, Department of Civil and Infrastructure Engineering, Gyeongsang National University, Jinju, Korea
dProfessor, Department of Landscape Architecture, Gyeongsang National University, Jinju, Korea
a경상국립대학교 건설시스템공학과 부교수
b경상국립대학교 건설시스템공학과 석사과정
c경상국립대학교 건설시스템공학과 박사과정
d경상국립대학교 조경학과 교수
*Corresponding Author
31 December 2025. pp. 1287-1296
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Abstract

With the increased frequency and intensity of extreme rainfall due to climate change, the limitations of conventional urban drainage systems have become evident. In response, this study proposes a decision support framework for the optimal design of deep underground drainage infrastructure, including stormwater storage systems. Various scenarios were developed considering vertical inlet positions, storage capacity, and rainfall patterns. Quantitative performance indicators were derived through hydrologic-hydraulic simulations, and two evaluation functions (System Connectivity and System Resilience) were applied along with socio-economic considerations (e.g., proximity to critical infrastructure and land use) to assess each scenario. Applied to a flood-prone district in S-catchment, the analysis showed that among the combinations with four vertical inlets, Scenario S3076 emerged as the optimal solution when socio-economic indicators were taken into account. This confirms that scenarios with similar hydraulic performance can be prioritized differently depending on social vulnerability and protection of critical infrastructure. This study presents a practical decision-making framework that integrates quantitative and qualitative evaluation for deep underground infrastructure planning in urban flood management. The proposed approach can be further generalized through inclusion of additional components and expansion to diverse urban networks.

Keywords
Urban underground infrastructure
Scenarios
Decision-making system
Socioeconomic design factors

기후변화로 인해 도시에서 극한 강우 발생 빈도가 증가함에 따라, 기존 배수체계의 한계를 보완하기 위한 대심도 지하 인프라 구축 필요성이 부각되고 있다. 본 연구에서는 대심도 저류시설 설계를 위한 의사결정 지원 프레임워크를 제안하고, 수직 유입구 조합, 저장 용량, 강우 패턴 등을 고려한 다양한 시나리오를 구성한 후 수리·수문학적 해석을 통해 정량적 성능 지표를 산출하였다. 이후 평가함수(System Connectivity, Resilience)와 사회·경제적 요소(중요 시설 위치, 토지 이용 등)를 종합적으로 반영하여 시나리오 간 상대적 가치 평가를 수행하였다. S-catchment 지역을 사례로 적용한 결과, 수직 유입구가 4개인 조합 중 사회·경제적 지표가 우수한 시나리오가 최적 설계안으로 선정되었다. 특히 동일한 수리 성능을 가지는 시나리오 간에도 사회적 피해 가능성과 중요 시설 보호 여부에 따라 평가 순위가 달라질 수 있음을 확인하였다. 본 연구는 극한 강우 대응을 위한 도시 지하 인프라 설계에서 정량적·정성적 요소를 통합한 실질적 의사결정 프레임워크를 제시하였다. 향후 다양한 시설 요소와 네트워크를 대상으로 한 확장적 적용과 평가지표의 다원화를 통해 본 기법의 일반화 가능성을 제시할 수 있을 것으로 판단된다.

키워드
도시 지하인프라
시나리오
의사결정시스템
사회경제적 설계요소
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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 :12
  • Pages :1287-1296
  • Received Date : 2025-07-21
  • Revised Date : 2025-10-16
  • Accepted Date : 2025-10-21
  • DOI :https://doi.org/10.3741/JKWRA.2025.58.12.1287
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