Journal of Environmental Impact Assessment (환경영향평가)

Korean Society of Environmental Impact Assessment (한국환경영향평가학회)
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Impact of Building Blocks on Inundation Level in Urban Drainage Area

지표 건물이 도시유역의 침수특성에 미치는 영향

  • Lee, Jeong-Young (Department of Urban Engineering, Chungbuk National University) ;
  • Ha, Sung-Ryong (Department of Urban Engineering, Chungbuk National University)
  • 이정영 (충북대학교 공과대학 도시공학과) ;
  • 하성룡 (충북대학교 공과대학 도시공학과)
  • Received : 2013.01.11
  • Accepted : 2013.01.31
  • Published : 2013.02.28
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Abstract

This study is an impact assessment of building blocks on urban inundation depth and area. LiDAR data is used to generate two original data set in terms of DEM with $5{\times}5$ meter and building block elevation layer of the study drainage area in Cheongju and then the building block elevation layer is modified again to the mesh data with same size to DEM. Two-dimensional inundation analysis is carried out by applying 2D SWMM model. The inundation depth calculated by using the building block elevation layer shows higher reliability than the DEM. This is resulted from the building block interference to surface flow. In addition, the maximum flooded area by DEM is two times wider than the area by building block layer. In the case of the surface velocity, the difference of velocity is negligible in either DEM or building block case in the low building impact zone. However, If the impact of building on the surface velocity was increase, the gap of velocity was significant.

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References

  1. 조완희, 한건연, 김영주(2010), GIS를 활용한 2차원 침수해석에서의 건물영향분석, 한국지리정 보학회지 13(2), 119-132.
  2. 이창희, 한건연, 노준우(2006), Dual-Drainage개념에 의한 도시침수해석모형의 개발, 한국토목학회논문집 26(4B), 379-387.
  3. 하창용, 한건연, 조완희(2010), GIS를 활용한 LiDAR 자료의 밀도에 따른 2차원 침수해석, 한국지리정보학회지 13(1), 74-88.
  4. 환경부(2010), 공공하수도의 우수관리 강화 기본계획.
  5. Horritt, M.S., Bates, P.D.(2001), Effects of spatial resolution on a raster based model of flood flow, Journal of Hydrology, 253, 239-249. https://doi.org/10.1016/S0022-1694(01)00490-5
  6. Lichti, D., Pfeifer, N., Maas, H.-G(2008), Terrestrial laser scanning, ISPRS Journal of Photogrammetry and Remote Sensing, 63, 1-3. https://doi.org/10.1016/j.isprsjprs.2007.10.002
  7. Shubert, J.E., Sanders, B.F.(2012), Building treatments for urban flood inundation models and implications for predictive skill and modeling efficiency, Advances in Water Resources, 41, 49-64. https://doi.org/10.1016/j.advwatres.2012.02.012

Cited by

  1. Analysis of Urban Inundation Considering Building Footprints Based on Dual-Drainage Scheme vol.17, pp.4, 2014, https://doi.org/10.11108/kagis.2014.17.4.040