대한토목학회논문집 (KSCE Journal of Civil and Environmental Engineering Research)

  • 제42권3호
  • /
  • Pages.333-342
  • /
  • 2022
  • /
  • 1015-6348(pISSN)
  • /
  • 2799-9629(eISSN)
대한토목학회 (Korean Society of Civil Engeneers)
권호 표지
DOI QR코드

DOI QR Code

RCP 기후변화 시나리오에 따른 우수 유출량 저감을 위한 저영향개발 시설의 적용 방안

Application of LID to Reduce Storm Runoff according to the RCP Climate Change Scenarios

  • 김민지 (한양대학교 대학원 스마트시티공학과) ;
  • 김지은 (한양대학교 대학원 건설환경시스템공학과) ;
  • 박경운 (한양대학교 대학원 건설환경시스템공학과) ;
  • 김태웅 (한양대학교(ERICA) 건설환경공학과)
  • 투고 : 2021.06.15
  • 심사 : 2022.02.15
  • 발행 : 2022.06.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

기후변화의 영향으로 집중호우가 증가하고 있으며, 이로 인한 침수피해가 매년 발생하고 있다. 본 연구는 저영향개발(LID) 시설의 우수 유출저감 효과를 분석하기 위하여, 용두빗물펌프장 유역을 대상으로, 미국 환경보호청(EPA)의 우수유출관리모형(SWMM)을 이용하여, 과거와 미래의 대표 강우사상에 대한 유출분석을 수행하였다. 그 결과 과거 강우사상과 비교하여 미래 대표 강우사상에 대한 침투량은 3.17 % 증가하였지만, 지표면 유출량 및 첨두유량은 각각 32.50 % 및 128.77 % 증가하였다. 이러한 지표면 유출량과 첨두유량의 증가를 감소시키기 위하여 투수성 포장, 옥상녹화 및 빗물정원을 선정하였다. 세 가지 LID 시설의 매개변수와 설치 면적 비율을 조정하여 LID 시설의 적용성을 평가하였다. 그 결과 첨두유량과 지표 유출량을 감소시키고 침투량과 저류량를 증가시키는 투수성 포장, 옥상 정원 그리고 빗물 정원의 적정 매개변수를 찾을 수 있었다. 또한 투수성 포장, 옥상녹화, 빗물정원의 적용 비율이 2:1:3일 때, 첨두유량 26.85 %, 침투량 12.10 %, 지표면 유출량 15.11 %, 저류량 509.47 %의 저감효과가 나타났다. 재현기간별 우수 유출저감 효과를 분석한 결과, 재현기간이 증가할수록 첨두유량과 지표면 유출량의 비중은 늘어나고 침투량과 저류량의 비중은 줄어드는 것으로 나타났다.

Due to climate change, increased heavy rainfalls result in flood damage every year. To investigate the storm-runoff reduction effects of Low Impact Development (LID), this study performed runoff analyses using the U.S. Environmental Protection Agency (EPA) Storm Water Management Model (SWMM) for past and future representative storm events of the Yongdu Rainwater Pumping Station basin. As a result, the infiltration loss for representative future rainfalls increased by 3.17 %, and the surface runoff and peak runoff rate increased significantly by 32.50 %, and 128.77 %, respectively. To reduce the increased surface runoff and peak runoff rates, this study investigated the applicability of LID approaches, including a permeable pavement, green roof, and rain garden, by adjusting the LID parameters and the ratio of installation area. We identified the ranges of LID parameters that decreased peak runoff rate and surface runoff, and increased infiltration. In addition, when the application ratio of permeable pavement, green roof, and rain garden was 2:1:3, best performance was attained, leading to a reduction of peak runoff of 26.85 %, infiltration loss 12.01 %, surface runoff 15.11 %, and storage 509.47 %. Based on analyzing the effect of storm runoff reductions for various return periods, it was found that as the return period increased, the proportion of peak runoff and surface runoff increased and the proportion of infiltration loss and storage decreased.

키워드

참고문헌

  1. Bae, K. H., Ahn, J. W., Choi, Y. J. and Yi, J. U. (2019). "Analysis of the improved drainage capacity of urban basins at an LID facility." Journal of Korean Society of Hazard Mitigation, Vol. 19, No. 1, pp. 311-322. https://doi.org/10.9798/kosham.2019.19.1.311
  2. Doulabian, S., Golian, S., Toosi, S. and Murphy, C. (2020). "Evaluating the effects of climate change on precipitation and temperature for Iran using RCP scenarios." Journal of Water and Climate Change, Iwa Publishing, Vol. 12, No. 1, pp. 166-184, DOI: 10.2166/wcc.2020.114.
  3. Intergovernmental Panel on Climate Change (2014). Climate change 2014: Synthesis report, Geneva, Switzerland, pp. 151.
  4. Kang, H. S., Baek, H. J., Boo, G. O. and Jo, C. H. (2012). "According to representative concentration path (RCP) new national climate change scenarios." Water for Future, Vol. 45, No. 3, pp. 73-79.
  5. Kim, E. S. (2020). "Analysis of runoff according to application of SWMM-LID element technology (I): Parameter sensitivity analysis." Journal of Korean Society of Hazard Mitigation, Vol. 20, No. 6, pp. 437-444. https://doi.org/10.9798/KOSHAM.2020.20.6.437
  6. Kim, E. S., Yeon, J. S., Shin, H. S., Lee, J. S. and Choi, H. I. (2014). "Study on stormwater runoff reduction effects by LID application areas." Journal of Korean Society of Hazard Mitigation, Vol. 14, No. 2, pp. 309-316. https://doi.org/10.9798/KOSHAM.2014.14.2.309
  7. Kim, J. H. and Joo, J. G. (2017). "A study on the performance comparison of the low impact development facilities for long-term stormwater reduction." Journal of Korean Society of Hazard Mitigation, Vol. 17, No. 5, pp. 337-344. https://doi.org/10.9798/KOSHAM.2017.17.5.337
  8. Kim, J. H., Choi, S. W. and Joo, J. G. (2017). "EPA SWMM-LID modeling for low impact development." Journal of Korean Society of Hazard Mitigation, Vol. 17, No. 2, pp. 415-424. https://doi.org/10.9798/KOSHAM.2017.17.2.415
  9. Kim, Y. J., Yu, J. E., Lee, K. I., Sung, H. C. and Jeon, S. W. (2020). "Application of the HEC-HMS model for prediction of future rainfall runoff in the Daecheong Dam basin of the Geum River." Journal of Climate, Vol. 11, No. 6-1, pp. 609-619.
  10. Korea Meteorological Administration (KMA) (2021). Abnormal climate reports for 2020, Publication No. 11-1360000-001109-10, pp. 6-37.
  11. Lee, J. M., Lee, Y. S. and Choi, J. S. (2014). "Analysis of water cycle effect according to application of LID techniques." Journal of Wetlands Research, Vol. 16, No. 3, pp. 411-421. https://doi.org/10.17663/JWR.2014.16.3.411
  12. Ministry of Environment (MOE), Korea Environment Corporation (KECO) (2013a). Low impact development (LID) technical element guidelines, pp. 1-117.
  13. Ministry of Environment (MOE), Korea Environment Corporation (KECO) (2013b). A study on the national impermeable area rate survey and improvement plan, pp. 1-369.
  14. Park, J. O. (2018). Analysis of influence of LID technique on runoff reduction in urban stream watershed using SWMM model, Master's Thesis, University of Seoul National, pp. 1-77.
  15. Seoul Metropolitan Government (2014). 2030 Seoul metropolitan city master plan, pp. 1-214.
  16. U.S. Environmental Protection Agency (EPA) (2015). Storm water management model user's manual version 5.1, pp. 1-352.
  17. Yeo, K. D. and Jung, Y. H. (2013). "An anlysis of effect of green roofs in urbanized areas on runoff alleviation and cost estimation." Seoul Urban Studies, Vol. 14, No. 2, pp. 161-177.
  18. Yoon, E. H., Jang, C. L. and Lee, K. S. (2020). "Runoff analysis according to LID facilities in climate change scenario-focusing on Cheonggyecheon basin." Journal of Korea Water Resources Association, KWRA, Vol. 53, No. 8, pp. 583-595. https://doi.org/10.3741/JKWRA.2020.53.8.583