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引滦入津利用黎河输水，改变了黎河天然的水沙条件，河床发生了明显的冲淤变化．为探讨输水运用后河道演变规律、河道抵御洪水能力以及河道治理措施等内容，进行了黎河整治动床物理模型试验研究．模型设计采用了模型比降二次变态技术解决模型阻力相似问题，运用不同材料同时模拟沙质河床和粘性土质河床，取得较为理想的模拟效果．试验成果用于工程实际效益显著．本文对复杂输水河道物理模型试验具有参考意义．
Water diversion from Luanhe River to Lihe River changed the natural water and sediment conditions of Lihe River, and obvious riverbed alteration and erosion occurred. In order to discuss the evolution of the river course after the water conveyance, the river’s ability of resisting the flood and the measures of river course control, the physical model test of the movable bed of the Lihe River was conducted. The model design uses the model quadratic metamorphosis technique to solve the similarity problem of the model resistance, and simulates the sandy riverbed and the cohesive soil bed with different materials to achieve the ideal simulation result. Test results for the actual project significant benefits. This paper is of significance for the physical model test of complex water conveyance channels.