弯道取水口引水防沙模型试验设计及优化

黔北电厂取水口枢纽布置在河道急弯段,水流流态复杂,水力学影响因素难以控制,为确保取水安全、可靠以及取水枢纽工程设计优化,通过相似原理与模型试验对特征流量级下水流流态、流速分布、泥沙冲积等关键水力因素进行研究并结合泥沙淤积结果提出了新增拦沙坎的实验条件,通过两设计方案对比取优,结果表明新设计方案泄洪防冲效果显著。鉴此,本文通过对实验设置布置、现象结果优化措施等进行详细介绍,为此类工程实验提供设计参考。

The model experimental design and optimization of the water intake with sand prevention in bend river

Qianbei power plant water intake project layout in sharp bends of the fiver cross-section,the flowpattern complex hydraulics factors difficult to control,to ensure the water is safe,reliable water control project and design optimization through model tests on similar principles and characteristics of the flow level under flow pattern, velocity distribution, research and other key hydraulic alluvial silt factors combined result of silta- tion ,it proposed new inlet of weir experimental conditions ,by comparing the two designs take priority;the re- sults show that the new design of flood and erosion control effect is significant.In view of this ,the paper set by the experimental arrangement,the phenomenon in detail,the results of the optimization measures introduced, which provides a reference for the design familiar projects.