基于InfoWorks ICM的临安亚运场馆暴雨内涝模拟研究  

InfoWorks icm-based simulative study on rainstorm waterlogging for Asian Games venues in Lin′An District

作　　者：潘婧 陈燕[1,2] 唐伟 王锣洋 王品 胡潭高 PAN Jing;CHEN Yan;TANG Wei;WANG Luoyang;WANG Pin;HU Tangao(Institute of Remote Sensing and Earth Sciences,Hangzhou Normal University,Hangzhou 311121,Zhejiang,China;Zhejiang Provincial Key Laboratory of Urban Wetlands and Regional Change,Hangzhou 311121,Zhejiang,China;Zhejiang Institute of Surveying and Mapping Science and Technology,Hangzhou 311100,Zhejiang,China)

机构地区：[1]杭州师范大学遥感与地球科学研究院,浙江杭州311121 [2]浙江省城市湿地与区域变化研究重点实验室,浙江杭州311121 [3]浙江省测绘科学技术研究院,浙江杭州311100

出　　处：《水利水电技术（中英文）》2023年第6期12-21,共10页Water Resources and Hydropower Engineering

基　　金：国家高分辨率对地观测重大科技专项项目(5-Y30B01-9001-19/20-4);浙江省基础公益研究计划项目(LY19D010004)。

摘　　要：【目的】杭州亚运会举办期间正值汛期,亚运场馆及其周边区域内涝灾害风险显著增加,以水文水动力模型为支撑的暴雨内涝模型是预防、降低重点区域内涝灾害损失的重要手段。【方法】以临安区亚运场馆为例,运用InfoWorks ICM模型,构建核心区域的一维-二维暴雨内涝耦合模型。以2022年7月31日、2022年9月13日两场实测降雨对模型进行参数率定验证。在此基础上模拟不同设计降雨重现期下(10 a、20 a、50 a和100 a)的积水情景,分析核心区域的主要内涝点和成因,从而为预防城市内涝灾害提供决策依据。【结果】结果表明:模型的相对误差范围为11.11%~17.65%,表明其具有一定的可靠性。在不同设计降雨重现期下,受地形与排水管径大小等因素的影响,九州街与秀泉路路段积涝情况均比较严重。在重现期大于20 a时,亚运场馆西侧道路上出现深度大于0.40 m的积水,并随着重现期增大,积水面积也不断扩大;在降雨重现期为100 a的情况下,九州街与秀泉路路段积水最深达58 cm,积水面积为13.68 hm2。【结论】临近场馆道路的大面积积水对赛事的顺利举行将会带来一定挑战。建议增加周边商业地块与住宅区的绿地等透水面面积,并在积涝危险程度较大处设置排水泵。研究成果对解决城市内涝问题、制定相关策略具有参考价值。[Objective]The Hangzhou Asian Games is held just in a flood season,and then the risk of waterlogging disaster risk at Asian Games venues and their surrounding areas increase significantly,for which the hydrology-hydrodynamic model-based rainstorm waterlogging model is an important means to prevent and reduce the losses in the relevant key areas from waterlogging disaster.[Methods]Taking the Asian Games venues in Lin′an District as the study case,a 1D~2D waterlogging coupling model for the core area is established with InfoWorks ICM model.The model parameters are calibrated and verified by the measured data of the rainfalls occurred on July 31,2022 and September 13,2022.On the basis of this,the water ponding scenarios under different design rainfall return periods(10a,20a,50a and100a)are simulated,and then the main water ponding points and their causations are analyzed as well,so as to provide the decision-making basis for preventing the urban waterlogging disaster therein.[Results]The result shows that the relative error range of the model is 11.11%~17.65%,which indicates that it has certain reliability.Under the conditions of different design rainfall return periods,both the water ponding situations in the areas of Jiuzhou Street and Xiuquan Road are relatively serious under the influences from the factors of topography and drain pipe diameter,etc.When the return period is greater than 20 years,there will be ponding with a depth of more than 0.40 m on the road on the west side of the Asian Games venue,and with the increase of the return period,the area of ponding will continue to expand.Under the condition of the rainfall return period of 100a,the maximum depth of water ponding is to be 58 cm with the area of 13.68 hm~2 in Jiuzhou Street and Xiuquan Road.[Conclusion]The large area of ponding near the venue road will bring certain challenges to the smooth holding of the event.It is suggested to increase the area of the permeable surfaces such as green areas in the surrounding commercial and residential areas an

关 键 词：InfoWorks ICM 暴雨内涝 亚运场馆 临安区 气候变化 降雨 内涝灾害损失 积涝风险 

分 类 号：TV213.4[水利工程—水文学及水资源]