基于数值模拟计算的大型泵站排涝效果分析  

Analysis on drainage effect of large pumping station based on numerical simulation

作　　者：张玉伦 贾能 陈盛达 ZHANG Yulun;JIA Neng;CHEN Shengda(Hangzhou Nanpai Engineering Construction Management Service Center,Hangzhou 310020,China;Hangzhou Urban Planning and Design Institute,Hangzhou 310016,China)

机构地区：[1]杭州市南排工程建设管理服务中心,浙江杭州310020 [2]杭州市规划设计研究院,浙江杭州310016

出　　处：《水利建设与管理》2022年第8期21-26,共6页Water Conservancy Construction and Management

摘　　要：本文以应用河网非恒定流水动力模型计算得到的流量和实测水位为边界条件,采用InfoWorks ICM软件构建雨水管网和河网耦合的城市排水模型,模拟工程建成前后河道水位和积水情况,评估内涝风险变化。结果表明,遭遇50年一遇梅汛降雨,本工程建成后河道水位平均降幅0.4m,积水深度超过5cm的积水面积、积水量分别减少85%、89%,排涝效果显著,大幅降低了杭州城西区域内涝风险,使其治涝标准达50年一遇。研究成果对其他大型泵站效益分析具有一定参考价值。The water flow calculated by the unsteady flow hydrodynamic model of application river network and the measured water levels are used as boundary conditions.The InfoWorks ICM software is used to construct the urban drainage model of rainwater pipe network and river network coupling.The change of river level and regional waterlogging before and after the completion of the project is simulated.The results show that in the case of 50-year rainstorm,the average decrease of river level is 0.4m,the area and amount of water accumulated in the region are reduced by 85%and 89%respectively after the completion of the project.The drainage effect of the project is significant,thereby greatly reducing the waterlogging risk in the western region of Hangzhou.Its waterlogging control standard reaches 50-year.The research results have certain reference value for benefit analysis of other large pumping stations.

关 键 词：InfoWorks ICM 城市排水模型 积水面积 积水量 排涝效果 

分 类 号：TV122[水利工程—水文学及水资源]