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Three-dimensional simulation of regional urban waterlogging based on high-precision DEM model

Author

Listed:
  • Zipeng Chen

    (Zhongnan University of Economics and Law)

  • Kun Li

    (Zhongnan University of Economics and Law)

  • Jianhua Du

    (Zhongnan University of Economics and Law)

  • Yi Chen

    (Zhongnan University of Economics and Law)

  • Ronggang Liu

    (Zhongnan University of Economics and Law)

  • Yi Wang

    (Zhongnan University of Economics and Law)

Abstract

With the frequent occurrence of extreme rainfall and the change of urban surface caused by human activities, urban waterlogging has gradually become a common disaster in many cities. In this paper, in order to deal with the urban waterlogging disasters, three-dimensional (3D) simulation of regional urban waterlogging was established based on high-precision digital elevation model (DEM). The project takes Zhongnan University of Economics and Law as the research area to setup the simulation. Firstly, the sub-catchment areas are divided by the watershed extraction method. Secondly, the research area is gridded to calculate the scope and volume of waterlogging area. Finally, combined with the rainstorm intensity formula, the statistics of local area underlying surface, and Soil Conservation Service (SCS) model, the urban waterlogging disaster model is established. Then, the waterlogging disaster calculation under different return period rainfall situations is realized and based on 3D technology, the 3D scene of research area and 3D simulation of waterlogging are shown by using CityEngine and Cesium. The data verification of the model is based on the rainfall data, and the urban waterlogging disaster results in Wuhan in 2016. The simulation results are basically consistent with the waterlogging disaster in 2016. And the research shows that the sub-catchment area divided by the watershed extraction method can take into account the blocking effect of terrain on surface runoff, and the results are consistent with the actual terrain. Waterlogging simulation in a small area can accurately locate the affected areas and buildings, and 3D visualization technology can be used as an effective means of transmitting disaster information to provide basis for emergency decision-making. Only the geographical data of the local area and the rainfall data are needed for the method for simulation calculation, which makes it easily to transplant to other areas and can provide an important idea and method for the flood prevention and control in flood season for reservoir, tailings pond, factories and so on.

Suggested Citation

  • Zipeng Chen & Kun Li & Jianhua Du & Yi Chen & Ronggang Liu & Yi Wang, 2021. "Three-dimensional simulation of regional urban waterlogging based on high-precision DEM model," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 108(3), pages 2653-2677, September.
    • Handle: RePEc:spr:nathaz:v:108:y:2021:i:3:d:10.1007_s11069-021-04793-8
    DOI: 10.1007/s11069-021-04793-8
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    References listed on IDEAS

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    1. Rui-Song Quan, 2014. "Rainstorm waterlogging risk assessment in central urban area of Shanghai based on multiple scenario simulation," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 73(3), pages 1569-1585, September.
    2. Boni Su & Hong Huang & Yuntao Li, 2016. "Integrated simulation method for waterlogging and traffic congestion under urban rainstorms," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 81(1), pages 23-40, March.
    3. Boni Su & Hong Huang & Yuntao Li, 2016. "Integrated simulation method for waterlogging and traffic congestion under urban rainstorms," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 81(1), pages 23-40, March.
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