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本文根据长江口水文、泥沙、地貌形态等自然特征,结合所需研究的各项任务,进行了详细的模型设计,确定了以下各项主要的比尺:水平比尺λ_L=1600;垂直比尺λ_H=120;泥沙沉速比尺λ_ω=0.95;泥浆扩散系数比尺λ_(Kx)=λ_(Ky)=17600。模型范围自天生港至口外鸡骨礁附近,全长约180公里。通过验证试验,自中浚以上直至徐六泾,模型沿程各潮位站的潮位过程线、各测流断面的流速及其横向分布与原型相符。在此基础上,进行了南支河段三沙治理方案的试验研究,并提出了较为合理的推荐方案。
Based on the natural features of the Yangtze River Estuary, such as hydrology, sediment and topography, combined with the various tasks required, a detailed model design was conducted and the following major scales were determined: the horizontal scale λ_L = 1600; the vertical ratio The scale λ_H = 120; sediment velocity scale λ_ω = 0.95; mud diffusion coefficient scale λ_ (Kx) = λ_ (Ky) = 17600. The model range from the natural port to the mouth outside the chicken and reef, a total length of about 180 km. Through the verification test, the flow velocity and its horizontal distribution at each tidal current section coincide with the prototype from the tide level process line of each tide station along the model from Zhongjun to Xuerujing and the model. On this basis, the experimental study of Sansha management scheme in Nanzijian reach was made and a more reasonable proposal was put forward.