Simulation and analysis of urban storm waterlogging based on 3D GIS
(2.Key Laboratory of Meteorological Disaster, Ministry of Education, Nanjing University of Information Science and Technology, Nanjing, China 210044)
【Abstract】Since traditional urban storm waterlogging simulation based on two-dimensional GIS cannot show the dynamic evolution of the flood disaster in three-dimensional plot, the method of rainstorm waterlogging disaster simulation based on 3D GIS was proposed. This method integrated techniques of meticulous modeling and stretching modeling, through the regional DEM construction, road surface modeling, building modeling, terrain matching to build urban three-dimensional model of the study area. The D8 algorithm was improved to carry out the catchment division, and the method of runoff coefficient was applied to carry out runoff calculation. The results showed that this method could effectively achieve the calculation of rainstorm waterlogging depth, water depth range as well as the waterlogging depth, the affected houses, the affected roads visualization in the three-dimensional scene.
【Keywords】 3D GIS; storm waterlogging; simulation;
(Translated by LU GP)
 CARRARA A, CARDINALI M, DETTI R, et al. GIS techniques and statistical models in evaluating landslide hazard [J]. Earth Surface Processes and Landforms, 1991, 16 (5): 427–445.
 XIE Tao, HE Zhengwei, HUANG Minqi, et al. Application of remote sensing and GIS technique in survey of geological hazards in reservoir [J]. Science of Surveying and Mapping, 2007, 32 (1): 130–131 (in Chinese).
 WEI Tianxian, ZHANG Jun, ZHANG Shizhong. Design and implementaion of geological disaster information inquiry and statistics system based on 3D GIS [J]. Journal of Natural Disasters, 2014, 23 (5): 38–44 (in Chinese).
 WANG Wei, ZHOU Xinchun, ZHANG Guoxue. Research on 3D dynamic simulation for severe weather disasters [J]. Yangtze River, 2014, 45 (2): 42–45 (in Chinese).
 CHEN Sanming, SUN Xiaolin, LIN Gang, et al. Flood disaster prediction model of Haiyang karst in Guilin based on DEM [J]. Journal of Guilin University of Technology, 2014, 34 (4): 646–650 (in Chinese).
 YANG Qigui, WANG Handong. A blocking seed spread algorithm for fast extracting flood submerged area based on massive DEM data [J]. Journal of Huazhong Normal University: Natural Science, 2015, 49 (4): 603–607 (in Chinese).
 SHEN Dingtao, WANG Jiechen, ZHANG Yu, et al. A quick flood inundation algorithm based on massive DEM data [J]. Acta Geodaetica et Cartographica Sinica, 2014, 43 (6): 645–652 (in Chinese).
 JIANG Ling, TANG Guoan, WANG Chun, et al. Fast and accurate data extraction of flood submerged area based on F-DEM [J]. Journal of Geo-Information Science, 2013, 15 (1): 68–74 (in Chinese).
 LUO Zhongquan. Three dimensional inundation analysis algorithm based on watershed DEM traversal [J]. Geomatics & Spatial Information Technology, 2012, 35 (2): 163–165 (in Chinese).
 XUE Fengchang, SHENG Jieru, QIAN Hongliang. Research on classification of rainstorm watershed delineation approach for plain urban regions [J]. Journal of Geo-Information Science, 2015, 17 (4): 462–468 (in Chinese).