黄河兰州段防洪渠化宽度的模型试验与数值计算

PHYSICAL AND NUMERICAL MODELS ON HARNESSING WIDTH AND DEFENDING FLOOD IN THE LANZHOU SECTION OF THE YELLOW RIVER

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。

Aiming at harnessing width and defending flood in the Lanzhou Section of the Yellow River,analyses of its bed topography,relation of river Coefficients,flow and forming beach conditions were made.Harnessing widths of middle flow and flood were defined. Based upon these conclusions of model experiment and numerical calculation.were carried out.The results of experiment and calculation agreed with the prototypal observation data.