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为解决城市暴雨内涝灾害问题,以海口市主城区为例,构建了基于InfoWorks ICM的城市综合流域排水模型,选用3场实测暴雨进行模拟分析,发现该模型具有良好的精度和可靠性。在此基础上,利用该模型对1、2、5、10、20年五种不同设计重现期的暴雨情景下研究区域排水管网系统的排水能力和积水深度进行模拟。结果表明,该模型能较好地评估研究区域的排水能力,且随设计暴雨重现期增加,研究区域的积水深度亦呈现出增加趋势,内涝灾害明显加重。
In order to solve the problem of waterlogging disaster in urban rainstorm, taking Haikou main urban area as an example, this paper constructs a comprehensive urban drainage system based on InfoWorks ICM, and selects three measured torrential rain for simulation analysis. It is found that the model has good accuracy and reliability. On this basis, the model was used to simulate the drainage capacity and water depth of the drainage network in the study area under the rainstorm scenario of 1, 2, 5, 10 and 20 years with different design periods. The results show that this model can evaluate the drainage capacity of the study area well and increase with the recurrence of heavy rainstorms. The water depth of the study area also shows an increasing trend and the waterlogging disaster obviously increases.