【摘要】 针对黄河兰州段的防洪及渠化问题，在对河道地形、河相关系、水流及河床演变进行分析后，确定了河道整治试验的重要参数，即洪水最小整治河宽。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。更多还原

【Abstract】 Aimed at the issue of flood prevention in Lanzhou reach of the Yellow River and the river channel, the important parameter for river channel harness experiment, i.e., the minimum harnessing river channel width in flood, is determined after analysis of river channel landform, relation of river facies, flows and river bed evolutions. On this basis, model test and calculation are carried out to the reach of the river with identical results of test and calculation to record data of original condition of the river.更多还原