城市双层河道流量过程模拟——以清华大学校河南支为例  

Simulation of flow process in urban double layered river channels:Case study of the South Branch of Campus River in Tsinghua University

作　　者：汪鑫 曹雪健 李瑞栋 朱世平 WANG Xin;CAO Xuejian;LI Ruidong;ZHU Shiping(Center for Municipal Renovation Administration,Tsinghua University,Beijing 100084;National Key Laboratory of Water Cycle Science and Water Conservancy Engineering,Tsinghua University,Beijing 100084;Water Resources Planning and Design General Institute,Ministry of Water Resources,Beijing 100120;Wuxi Hangzheng Technology Co.,Ltd.,Perception Technology Research Institute,Wuxi 214135)

机构地区：[1]清华大学修缮校园管理中心,北京100084 [2]清华大学水圈科学与水利工程全国重点实验室,北京100084 [3]水利部水利水电规划设计总院,北京100120 [4]无锡航征科技有限公司感知技术研究院,无锡214135

出　　处：《中国防汛抗旱》2024年第8期42-46,共5页China Flood & Drought Management

摘　　要：城市双层河道通过装备各类水利设施综合调配水流,可实现河道行洪、雨水资源利用、生态基流保障等多个目标,兼顾安全性和亲水性两个方面。但与此同时,双层河道在横—纵—侧各个维度上表现出相比于传统河道更为复杂的水力联系,给数值建模和流量模拟带来了挑战。目前围绕城市双层河道流量过程模拟的研究依然较少。以清华大学校河南支排水区为研究对象,考虑闸、孔、堰、泵等各种水利工程设施,构建了城市双层河道水流模拟模型,并以校园小型气象站降雨观测数据为驱动,对校河南支末端节制闸前水深变化过程和闸后流量过程进行了模拟。结果表明,所建模型可以较好模拟双层河道流量过程,具有较高的可信度。Through the installation of various water facilities for comprehensive water flow regulation,urban double-layered river can achieve flood discharge,rainwater resource utilization,and ecological base flow guarantee,taking into account both safety and hydrophilic aspects.However,the double-layered river channels exhibits more complex hydraulic connections than traditional river channels in the horizontal-vertical-lateral dimensions,posing challenges for numerical modeling and flow simulation.Currently,there are still few studies focused on simulating the flow process of urban double-layered river channels.This study takes the drainage area of south branch of the campus river in Tsinghua University as the research object and considers various water facilities such as gates,holes,weirs,and pumps to construct a water flow simulation model for urban doublelayered river channels.Based on the rainfall observation data of small weather stations on the campus,the process of water depth changes in front of the South Branch terminal control gate and flow after the gate are simulated.Results show that the established model can simulate the flow process of double-layered river channels well with high level of credibility.

关 键 词：城市雨洪 双层河道 流量模拟 精细化建模 

分 类 号：TV12[水利工程—水文学及水资源]