내수침수 생성 및 소멸 기작을 반영하기 위한 EGR 기법의 도입 및 적용

Eun Taek Shin; Dong Geun Kwak; Chang Geun Song

doi:10.3741/JKWRA.2024.57.S-1.1211

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2024 Vol.57, Issue 12S Preview Page Next Page

Research Article

내수침수 생성 및 소멸 기작을 반영하기 위한 EGR 기법의 도입 및 적용 Incorporation and application of EGR scheme for implementing sourcing and sinking of inland flooding

31 December 2024. pp. 1211-1220

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Abstract

This study introduces the Entrained Growth Rate (EGR) scheme to the analysis of inland flooding though the use of source/sink boundary conditions to reproduce dual drainage. The EGR scheme, originally developed to capture mass and momentum transfer in debris floods or hyper-concentrated flow dynamics, is adapted here for urban flood modeling. Though one-dimensional flow simulations, the inflow boundary condition at manholes was identified and integrated into a two-dimensional model using the EGR method. The effectiveness of this approach is demonstrated by analyzing the relationship between rainfall intensity and mass flow. Results show that the EGR-based boundary conditions improve the accuracy of urban flood simulations, particularly in reflecting the complex interactions between inflow and overflow processes. This methodology offers a novel approach for enhancing the accuracy of flood analysis and has potential for broader applications in flood risk management.

Keywords

Sink/source

Entrained growth rate

Inland flooding

Dual-drainage

본 연구에서는 내수침수 해석을 위한 유입 경계조건으로 질량의 생성 및 소멸항을 이용한 유입 성장률(Entrained Growth Rate, EGR)기법을 적용하는 방법론을 제시하고, 특정 영역 내에서 다양한 경계조건이 주어졌을 때의 질량 변화를 분석하였다. EGR 기법은 토사 유출 동역학에서 경로 물질의 유입 과정 동안 질량과 운동량 전달을 반영하기 위해 개발된 기법으로, 토사 유출의 평균 체적 성장률을 추정할 수 있으며, 자연 지수 성장 방식을 통해 토사의 유입 조건을 반영한다. 본 연구에서는 이러한 방법을 도시 홍수 해석을 위한 내수침수 해석의 유입 경계조건으로 활용하였다. 강우 시나리오에 의한 1차원 관망 흐름해석 모형의 결과를 통해 맨홀 월류량을 산정하였고, 이를 EGR 기법이 반영된 2차원 천수흐름 해석 모형의 유입 경계조건으로 반영하였다. 이를 통해 강우 강도와 유출되는 질량의 관계를 분석하여 EGR 기법을 이용한 유입 경게조건이 적용 가능함을 확인하였다. 본 연구에서는 내수침수 해석을 위한 유입 경계조건으로 EGR 기법을 활용하는 새로운 접근 방식을 제안하였으며, 향후 다양한 응용 분야에서의 활용 가능성을 제시하였다. 이를 통해 내수침수 해석의 정확성을 높이고, 실무적 응용 범위를 확장할 수 있을 것으로 기대된다.

키워드

생성 및 소멸항

유입 성장률

내수침수 해석

질량 보존

유입 및 유출 경계조건

References

Bentley Systems (2020). OpenFlows FLOOD, accessed 10 December 2024, <https://en.virtuosity.com/static/version1734068261/frontend/Bentley/virtuosity/en_US/pdf/PDS_OpenFlows_FLOOD_LTR_EN_LR.pdf>.

Courty, L. (2018). Integrated modelling of overland flows and drainage networks in a urban environment. Ph.D. Thesis, Universidade Nacional Autónoma do México, Mexico City, Mexico.

10.31237/osf.io/38w4t

Fernández-Pato, J., and García-Navarro, P. (2018). "Development of a new simulation tool coupling a 2D finite volume overland flow model and a drainage network model." Geosciences, Vol. 8, 288.

10.3390/geosciences8080288

Henonin, J., Russo, B., Mark, O., and Gourbesville, P. (2013). "Real-time urban flood forecasting and modelling - A State of the Art." Journal of Hydroinformatics, Vol. 15, pp. 717-736.

10.2166/hydro.2013.132

Hungr, O., Morgan, G.C., and Kellerhals, R. (1984). "Quantitative analysis of debris torrent hazards for design of remedial measures." Canadian Geotechnical Journal, Vol. 21, pp. 663- 677.

10.1139/t84-073

Ikeya, H. (1981). "A method of designation for area in danger of debris flow." In Erosion and Sediment Transport in Pacific Rim Steeplands, I.A.H.S. Publication, Christchurch, New Zealand, No. 132, pp. 576-588.

Innovyze (2018). InfoWorks ICM help, accessed 10 December 2024, <https://help.innovyze.com/display/infoworksicm>.

Jahanbazi, M., and Egger, U. (2014). "Application and comparison of two different dual drainage models to assess urban flooding." Urban Water Journal, Vol. 11, pp. 584-595.

10.1080/1573062X.2013.871041

Jang, J.-H., Chang, T.-H., and Chen, W.-B. (2018). "Effect of inlet modelling on surface drainage in coupled urban flood simulation. Journal of Hydrology, Vol. 562, pp. 168-180.

10.1016/j.jhydrol.2018.05.010

Kim, H.J., Rhee, D.S., and Song, C.G. (2018a). "Numerical computation of underground inundation in multiple layers using the adaptive transfer method." Water, Vol. 10, No. 1, 85. doi: 10.3390/w10010085.

10.3390/w10010085

Kim, S.E., Lee, S.E., Kim, D.W., and Song, C.G. (2018b). "Stormwater inundation analysis in small and medium cities for climate change using EPA-SWMM and HDM-2D." Journal of Coastal Research, Vol. 85, pp. 991-995. doi: 10.2112/SI85-199.1.

10.2112/SI85-199.1

Leandro, J., and Martins, R.A. (2016). "Methodology for linking 2D overland flow models with the sewer network model SWMM 5.1 based on dynamic link libraries." Water Science and Technology, Vol. 73, pp. 3017-3026.

10.2166/wst.2016.17127332848

Lee, S.O., and Song, C.G. (2018). "Influence of flow resistance stresses on debris flow runout." Environmental Earth Sciences, Vol. 77, 426.

10.1007/s12665-018-7604-2

Leitão, J.P., Almeida, M.d.C., Simões, N.E., and Martins, A. (2013). "Methodology for qualitative urban flooding risk assessment." Water Science and Technology, Vol. 68, pp. 829-838.

10.2166/wst.2013.31023985513

Martins, R. (2016). Development of a fully coupled 1D/2D urban flood model. Ph.D. Thesis, Faculdade de Ciências e Tecnologia da Universidade de Coimbra, Coimbra, Portugal.

McDougall, S., and Hungr, O. (2005). "Dynamic modelling of entrainment in rapid landslides." Canadian Geotechnical Journal, Vol. 42, No. 5, pp. 1437-1448.

10.1139/t05-064

MIKE URBAN (2014). Collection system, accessed 31 December 2017, <https://manuals.mikepoweredbydhi.help/2017/Cities/CollectionSystem.pdf>.

Oh, S.M., Song, C.G., and Lee, S.O. (2016). "Inflow characteristics of debris flow and risk assessment for different shapes of defensive structure." Journal of the Korean Society of Safety, Vol. 31, No. 6, pp.93-98.

Rhee, D.S., Lyn, S.W., and Song, C.G. (2018). "Numerical computation of rapid flow over steep terrain using total acceleration method." Journal of Coastal Research, Vol. 85, pp. 986-990. doi: 10.2112/SI85-198.1.

10.2112/SI85-198.1

Russo, B., Sunyer, D., Velasco, M., and Djordjević, S. (2015). "Analysis of extreme flooding events though a calibrated 1D/ 2D coupled model: The case of Barcelona (Spain)." Journal of Hydroinformatics, Vol. 17, pp. 473-491.

10.2166/hydro.2014.063

Sañudo, E., Cea, L., and Puertas, J. (2020). "Modelling pluvial flooding in urban areas coupling the models Iber and SWMM." Water, Vol. 12, 2647.

10.3390/w12092647

Song, C.G., and Oh, T.K. (2016). "Transient SU/PG modelling of discontinuous wave propagation." Progress in Computational Fluid Dynamics, Vol. 16, No. 3, pp. 146-162. doi: 10.1504/PCFD.2016.076221.

10.1504/PCFD.2016.076221

Song, C.G., Ku, Y.H., Kim, Y.D., and Park, Y.S. (2018). "Stability analysis of riverfront facility on inundated floodplain based on flow characteristic." Journal of Flood Risk Management, Vol. 11, No. 4, pp. 455-467. doi: 10.1504/PCFD.2016.076221.

10.1504/PCFD.2016.076221

Takahashi, T., and Nakagawa, H. (1991). "Prediction of stony debris flow induced by severe rainfall." Journal of the Japan Society of Erosion Control Engineering, Vol. 44, No. 3, pp. 12-19.

Thurber Consultants Ltd. (1983). Debris torrent and flooding hazards, highway 99, howe sound. Report to the British Columbia Ministry of Transportation and Highways, Victoria, Canada, p. 42.

Wu, X., Wang, Z., Guo, S., Lai, C., and Chen, X. (2018). "A simplified approach for flood modeling in urban environments." Hydrology Research, Vol. 49, pp. 1804-1816.

10.2166/nh.2018.149

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 :12
Pages :1211-1220
Received Date : 2024-10-14
Revised Date : 2024-11-30
Accepted Date : 2024-12-03
DOI :https://doi.org/10.3741/JKWRA.2024.57.S-1.1211

Journal of Korea Water Resources Association ISSN:2799-8746(Print) 2799-8754(Online) 한국수자원학회 논문집

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