Taking the Jianpanshan watershed of Liuzhou City as an example,the SWMM one-dimensional pipeline model and the LISFLOOD-FP two-dimensional ground model were constructed and coupled.Based on the measured rain-fall"20180818"24-hour rainstorm data,the obtained rainstorm waterlogging depth and inundation area were compared with the range of the recorded inundation points in the field,and the applicability of the coupling model was verified.Then,based on the coupled model,the design rainfall of 2,5,10 and 20 years in the Jianpanshan watershed was simula-ted,and the overflow nodes,inundation depth and inundation area of the study area under different return periods were obtained.The results were visualized based on the ARCGIS platform.The results show that the proportion of overflow nodes increases from 9.03% to 25.99% ,and the overflow area increases from 0.473 km2 to 2.114 km2 when the return period increases from 2 to 20 years.The key inundation areas are distributed in Pingshan Avenue,Paotuan Road,Xijiang Road and Dongdi Road.
维普
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