基于VB的平原河道支流入汇河段水面线计算方法研究  

Study on Calculation Method of the Water Surface Profile of the Inflow Reach of the Tributary in Plain River Based on VB

作　　者：杨志[1] YANG Zhi(Anhui Construction Engineering Quality Supervision and Inspection Station Co.,Ltd,Hefei 230088,China)

机构地区：[1]安徽省建筑工程质量监督检测站有限公司,安徽合肥230088

出　　处：《云南水力发电》2023年第7期34-39,共6页Yunnan Water Power

摘　　要：天然河道水面线的计算和研究是水利工程设计的一个主要依据。采用试算法并通过VB编程求解出渭河支流入汇河段干支流的水面线,分析了交汇区的各水力特性。得到的结论如下:单一干流来水情况时,干流各断面的水位总体上随流量增大而增大。有支流入汇且汇流比改变情况时,干支流断面的水位均随汇流比的增大而增大。保持支流入汇量不变,增大干流来水量,支流断面水位逐渐增大,说明干流水流对支流水流也产生了顶托作用。对交汇区典型断面水位特性分析发现,在有支流入汇情况下,典型断面的平均水位比无支流入汇情况下高了接近0.5 m。The calculation and research of water surface profile of natural river is a main basis for the design of hydraulic engineering.In this paper,the trial and error method and VB programming are used to solve the water surface profile of the main and tributaries of the Weihe River tributary into the confluence,and the hydraulic characteristics of the confluence area are analyzed.The conclusion shows that the water level of each section of the main stream generally increases with the increase of flow under the condition of single main stream inflow.When there are tributaries and the confluence ratio changes,the water level of the main and tributary sections increases with the increase of the confluence ratio.Keeping the inflow of tributaries unchanged,increasing the inflow of the main stream,the water level of the tributary section increases gradually,indicating that the main stream flow also has a jacking effect on the tributary flow.According to the analysis of water level characteristics of typical sections in the intersection area,the average water level of typical sections with tributaries is nearly 0.5m higher than that without tributaries.

关 键 词：水面线 VB编程计算 干支流交汇 水力特性 汇流比 

分 类 号：TV222.2[水利工程—水工结构工程]