Volume 39 Issue 9
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LI Zhifeng, WU Lixin, ZHANG Zhenxin, YANG Yizhou. CD-TIN Based Urban Inundation Simulation Method and Its Experiment[J]. Geomatics and Information Science of Wuhan University, 2014, 39(9): 1080-1085. DOI: 10.13203/j.whugis20120098
Citation: LI Zhifeng, WU Lixin, ZHANG Zhenxin, YANG Yizhou. CD-TIN Based Urban Inundation Simulation Method and Its Experiment[J]. Geomatics and Information Science of Wuhan University, 2014, 39(9): 1080-1085. DOI: 10.13203/j.whugis20120098
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CD-TIN Based Urban Inundation Simulation Method and Its Experiment

  • 1 Key Laboratory of Environment Change and Natural Disaster,Beijing Normal University,Beijing,100875 ,China;2 IoT Perception Mine Research Center,China University of Mining and Technology,Xuzhou 221008,China;3 College of Geoscience and Surveying Engineering,China University of Mining and Technology,Beijing 100083,China;4 College of Resources and Civil Engineering,Northeastern University,Shenyang 110004.

Funds: The Natural Science Foundation Key Program of Beijing,No.8111003;the National 973Program of China,No.2011CB707102;the Fundamental Research Funds for Central Universities,No.105565GK.
More Information
  • Author Bio:

    LI Zhifeng,PhD candidate,specializes in spatial information methods and technologies,disaster assessment and risk simula-tion.

  • Corresponding author:

    WU Lixin

  • Received Date: March 20, 2013
  • Revised Date: September 04, 2014
  • Published Date: September 04, 2014
    Graphical Abstract
    • Abstract
  • Objective Urban storm floods cause dramatically property damage and severely influence on city life.It is an emergency issue and a knotty problem to be solved.Much research focuses on raster-basedDEM and hydrodynamic equations to simulate inundation processes.Nevertheless,current methodsstrictly require hydrology data and are unable to model accurately the urban terrain features.By em-ploying a constrainted Delaunay triangular irregular network(CD-TIN),complex urban surfaces areprecisely modeled in detail.Urban basins,serving as simulation units,are generated based on the wa-ter flow rules for triangular surface.Referring to the capacity of the drainage and complexity of urbanterrain features,we introduce the basin runoff yield and confluence method for spatio-temporal calcu-lation step by step.In order to obtain the inundated extent and water depth,a numerical solution isput forward based on the concept of triangular-prism sets through dichotomy.The main campus ofBeijing Normal University(BNU)is used as a case to construct the CD-TIN and to simulate the“7.21storm”inundation event,2012,to test the usability and suitability of the method presented.Simula-tion water depths are compared with the observation data,showing that the CD-TIN based method forurban inundation simulation is effective and reliable.The CD-TIN based simulation method will beuseful for urban flood emergency preparation,storm flood risk analysis and urban reforms in potentialinundation areas.
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    • References (1)
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