针对黄河兰州段的渠化及防洪问题，对河道地形、河相关系、水流及成滩条件进行分析，确定了河道中水整治河宽及洪水最小整治河宽。在此基础上对该河段进行了模型试验和数值计算，试验及计算结果与原型河段实测资料吻合较好。 In view of the channelization and flood control of the Lanzhou section of the Yellow River, the river topography, river facies, water flow and sea formation conditions were analyzed to determine the river water reclamation river width and the minimum flood control river width. On this basis, the model test and numerical calculation are carried out on the river section. The test and calculation results are in good agreement with the measured data of the prototype river section.