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J. Korean Soc. Hazard Mitig. > Volume 19(1); 2019 > Article
풍수해방재
Journal of the Korean Society of Hazard Mitigation 2019;19(1):311-322.
DOI: https://doi.org/10.9798/KOSHAM.2019.19.1.311    Published online February 28, 2019.
LID시설의 도심지 배수능력 개선 효과 분석
배강희1, 안재황2, 최영제3, 김병식4, 이재응5
1정회원, 바론이엔씨 대표
2정회원, 아주대학교 건설교통공학과 박사과정
3아주대학교 건설교통공학과 박사과정
4정회원, 강원대학교 방재전문대학원 도시⋅환경방재전공 교수
5정회원, 아주대학교 건설교통공학과 교수
Analysis of the Improved Drainage Capacity of Urban Basins at an LID Facility
Kanghee Bae1, Jaehwang Ahn2, Youngje Choi3, Byungsik Kim4, Jaeeung Yi5
1Member, CEO, Baron E&C
2Member, Ph.D Candidate, Department of Civil&Transportation Engineering, Ajou University
3Ph.D Candidate, Department of Civil&Transportation Engineering, Ajou University
4Member, Professor, Department of Climate change Urban & Environmental Disaster Research Lab, Kangwon National University
5Member, Professor, Department of Civil&Transportation Engineering, Ajou University
Corresponding author:  Jaeeung Yi, Tel: +82-31-219-2507, Fax: +82-31-219-2501, 
Email: jeyi@ajou.ac.kr
Received: 15 November 2018   • Revised: 19 November 2018   • Accepted: 3 December 2018
Abstract
This study analyzes the change in the peak flow rate and discharge capacity of a sewage network with LID facilities using the rainfall runoff hydrological model SWMM. The demonstration complex has an area of 35,151 m2 and include the seven elements of LID facilities: a porous pavement, tree box filter, planter box, bio retention, infiltration trench, rain barrel, and an infiltration rain catch basin. The results of analysis using the SWMM show that the peak flow rate per watershed decreased by 9.07% on average and 7.46% within the target site. According to the result observed for discharge capacity within sewerage network, the branch sewer improved by an allowance of 13.22% for a 10-year return frequency and main sewer improved by an allowance of 9.69% for a 30-year return frequency.
Key Words: LID, SWMM, Peak Flow, Rate and Discharge Capacity, Sewer Network
요지
본 연구에서는 강우-유출 수문해석 모형의 하나인 SWMM을 통해 LID시설에 따른 첨두유량의 변화와 하수관망에 미치는 영향에 대해 분석하였다. 연구대상 LID시설은 투수성 포장, 나무 여과상자, 식물 재배화분, 식생 체류지, 침투 도랑, 침투통, 침투형 빗물받이 등 총 7개 요소의 LID시설이며 35,151 ㎡에 걸쳐 설치 되어있다. SWMM을 통한 LID시설 효과의 검토 결과, 유역별 첨두유량은 평균 9.07%의 저감율을 보였으며, 전체 연구대상유역은 7.46%의 저감율을 보였다. 또한 지선하수관거는 10년빈도 확률강우에 대해 13.22%, 간선하수관거는 30년 빈도 확률강우에 대해 9.69%의 여유율의 개선 효과를 나타내었다.
핵심용어: LID, SWMM, 첨두유량, 통수능, 하수관망


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