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以兰州市为例研究黄河兰州段河道渠化整治方案与泄洪等的关系。在对河道地形、河相关系、造床流量及河床演变规律分析的基础上 ,提出了切实可行的整治宽度 2 40m、泄洪宽度 30 0m及相关建议 ,并进行了物理模型试验和数值计算 ,实验与计算基本吻合。该方案的实施不但可满足泄洪的要求而且并未引起水位、流速及河床断面地形较大幅度的变化。
A Case Study of Lanzhou City to Study the Relationship between Channel Regulation and Flood Discharge in the Lanzhou Section of the Yellow River. Based on the analysis of the river topography, the river facies, the bed flowrate and the riverbed evolution law, a feasible renovation width of 240m and a flood discharge width of 30m and some related suggestions were put forward. The physical model test and numerical calculation were carried out, Calculation of basic agreement. The implementation of this program not only meets the requirements of flood discharge but also does not cause significant changes in water level, flow rate and riverbed section topography.