王志寰, 朱立俊, 王建中, 范红霞, 刘贝贝, 陈槐. 长江对鄱阳湖倒灌影响的微模型模拟[J]. 水利水运工程学报, 2019, (5): 44-53. DOI: 10.16198/j.cnki.1009-640X.2019.05.006
引用本文: 王志寰, 朱立俊, 王建中, 范红霞, 刘贝贝, 陈槐. 长江对鄱阳湖倒灌影响的微模型模拟[J]. 水利水运工程学报, 2019, (5): 44-53. DOI: 10.16198/j.cnki.1009-640X.2019.05.006
WANG Zhihuan, ZHU Lijun, WANG Jianzhong, FAN Hongxia, LIU Beibei, CHEN Huai. Microscale model simulation of backflow influences of Yangtze River on Poyang Lake[J]. Hydro-Science and Engineering, 2019, (5): 44-53. DOI: 10.16198/j.cnki.1009-640X.2019.05.006
Citation: WANG Zhihuan, ZHU Lijun, WANG Jianzhong, FAN Hongxia, LIU Beibei, CHEN Huai. Microscale model simulation of backflow influences of Yangtze River on Poyang Lake[J]. Hydro-Science and Engineering, 2019, (5): 44-53. DOI: 10.16198/j.cnki.1009-640X.2019.05.006

长江对鄱阳湖倒灌影响的微模型模拟

Microscale model simulation of backflow influences of Yangtze River on Poyang Lake

  • 摘要: 微模型试验技术具有模型规模小、试验周期短和经济性好等优势,可用于研究大范围和复杂系统的江湖关系问题,但国内应用实例较少,其相似理论和模型设计关键技术值得深入研究。基于研究长江与鄱阳湖江湖倒灌规律的需要,探讨了江湖倒灌微模型应遵循的相似律和微模型设计方法,提出了微模型阻力相似及模型物理量测控的解决方案,建立了平面比尺1:6 500、垂直比尺1:150的长江-鄱阳湖-“五河”尾闾微模型。经实测水文资料验证,该模型在水位、流速及长江对鄱阳湖倒灌时间和倒灌流量等方面与原体具有较好相似性,所用模型设计和模拟方法为进一步推广微模型试验技术提供了理论依据,为研究河流、湖泊、河口、海岸等大尺度和复杂水沙运动问题提供了参考。

     

    Abstract: Microscale model test technology has the advantages of small scale, short test cycle and good economical efficiency. It can be used to study the river-lake relationships of large-scale and complex systems. However, there are few domestic application examples. The key technical issues associated with similarity theory and microscale model design need to be further studied. Based on the need of studying the law of backflow from the Yangtze River into Poyang Lake, in this paper, we discuss the similarity laws and the design method of the microscale model which should be followed in the microscale mode for backflow from the Yangtze River into Poyang Lake, put forward the solution of the resistance similarity of the microscale model and the measurement and control of the physical quantities of the model, and establish a microscale model for the Yangtze River-Poyang Lake-tail channels of "five Rivers" in Jiangxi with the horizontal scale of 1:6 500 and the vertical scale of 1:150. Through the verification of the measured hydrological data, the microscale model shows a good similarity with the prototype in terms of water level, flow velocity and duration and flow rate of water from the Yangtze River flowing backward into Poyang Lake. The model design and simulation method proposed in this paper provide a theoretical basis for further promotion of the microscale model test technology and provide reference for the study of the large-scale and complex water-sediment movement problems of rivers, lakes, estuaries and coasts.

     

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