气候变化领域集成服务门户(CCPortal): Three-dimensional simulation of regional urban waterlogging based on high-precision DEM model

CCPortal

DOI	10.1007/s11069-021-04793-8
	Three-dimensional simulation of regional urban waterlogging based on high-precision DEM model
	Chen Z.; Li K.; Du J.; Chen Y.; Liu R.; Wang Y.
发表日期	2021
ISSN	0921030X
起始页码	2653
结束页码	2677
卷号	108 期号:3
英文摘要	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. © 2021, The Author(s), under exclusive licence to Springer Nature B.V.
关键词	Disaster simulation High-precision DEM model Three-dimensional GIS Urban waterlogging
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206156
作者单位	School of Information and Safety Engineering, Zhongnan University of Economics and Law, Wuhan, 430074, China
推荐引用方式 GB/T 7714	Chen Z.,Li K.,Du J.,et al. Three-dimensional simulation of regional urban waterlogging based on high-precision DEM model[J],2021,108(3).
APA	Chen Z.,Li K.,Du J.,Chen Y.,Liu R.,&Wang Y..(2021).Three-dimensional simulation of regional urban waterlogging based on high-precision DEM model.Natural Hazards,108(3).
MLA	Chen Z.,et al."Three-dimensional simulation of regional urban waterlogging based on high-precision DEM model".Natural Hazards 108.3(2021).