垂直入汇流量控制及航道水流条件综合研究

Vertical inflow discharge control and the flow conditions for navigation

针对垂直入汇干支流交汇区的平面布置难题,采用正态物理模型对支流的流量控制及交汇区航道水流条件进行模拟研究。试验遵循分流、导流、扩散的思路对支流的入汇路径进行优化,推荐方案试验结果表明:干流无流量时,枢纽能将支流来流按设计分流比分向干流上下游;干流有来流时,枢纽自动将支流来流调整至通过下游引渠汇入干流;各工况下交汇区航道水流条件均满足规范要求。通过增设隔板、流线型分流岛、导流板等综合优化措施能实现流量控制、改善垂直入汇交汇区的航道水流条件的目标。

Regarding the difficult problem of plane layout in the confluence area of vertical branches and tributaries,the normal physical model is used to simulate the flow control and flow conditions for navigation in the confluence area.The inflow path of the tributary is optimized following the idea of split-flow,diversion and diffusion.The results of the recommended scheme show that when the recommended stream has no flow in main stream,the hydraulic complex can divert the tributaries according to the designed split ratio.When the main stream has incoming flow,the hydraulic complex automatically adjusts the incoming flow of tributaries cross downstream channel to join the main stream.The flow conditions for navigation in the confluence area meet the standard requirements under each working condition.The comprehensive optimization measures such as adding partition board,streamlined diversion island,diversion plate and so on can achieve the goal of flow control and improve the flow conditions for navigation in the vertical inflow confluence area.