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    汪鑫,曹雪健,李瑞栋,等. 城市双层河道流量过程模拟——以清华大学校河南支为例[J]. 中国防汛抗旱,2024,34(8):42−46. DOI: 10.16867/j.issn.1673-9264.2023334
    引用本文: 汪鑫,曹雪健,李瑞栋,等. 城市双层河道流量过程模拟——以清华大学校河南支为例[J]. 中国防汛抗旱,2024,34(8):42−46. DOI: 10.16867/j.issn.1673-9264.2023334
    WANG Xin,CAO Xuejian,LI Ruidong,et al.Simulation of flow process in urban double layered river channels: Case study of the South Branch of Campus River in Tsinghua University[J].China Flood & Drought Management,2024,34(8):42−46. DOI: 10.16867/j.issn.1673-9264.2023334
    Citation: WANG Xin,CAO Xuejian,LI Ruidong,et al.Simulation of flow process in urban double layered river channels: Case study of the South Branch of Campus River in Tsinghua University[J].China Flood & Drought Management,2024,34(8):42−46. DOI: 10.16867/j.issn.1673-9264.2023334

    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

    • 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。

       

      Abstract: 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 double-layered 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.

       

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