温泉水利枢纽溢洪洞挑流鼻坎优化模型试验研究  

Model Test on Optimization of Flip Bucket of Spillway Tunnel of Wenquan Hydro Project

作　　者：赵姗姗 ZHAO Shanshan(Xinjiang Water Conservancy and Hydropower Survey and Design Institute,Urumqi 830000,China)

机构地区：[1]新疆水利水电勘测设计研究院,新疆乌鲁木齐830000

出　　处：《红水河》2022年第1期61-66,共6页Hongshui River

摘　　要：挑流鼻坎是比较常见的水力消能设施,其合理的体形结构是确保减小下游冲刷坑深度、改善水流条件、减小下游雾化影响的先决条件,通过模型试验对比分析是验证挑流鼻坎结构体形的有效手段之一。笔者通过模型试验验证挑流鼻坎原设计体形,观测水流流态及下游冲刷坑深度,逐步调整挑流鼻坎的结构体形,统计分析下游冲刷坑范围及深度,最终确定推荐采用转向扩散斜切挑流鼻坎结构体形。该形式的挑鼻坎达到了挑距差大、挑射水流纵向和横向扩散效果良好、下游水垫波动较小、消能效果显著的目的。The flip bucket is a common hydraulic energy dissipation facility,and its reasonable body structure is a prerequisite to reduce the depth of downstream scour pit,improve water flow conditions,and reduce the influence of downstream atomization.Comparative analysis of model tests is one of the effective means to verify the body structure of flip bucket.The author verified the original design shape of the flip bucket through model test,observed the flow pattern and the depth of the downstream scouring pit,gradually adjusted the structural shape of the flip bucket,statistically analyzed the range and depth of the downstream scouring pit,and finally determined to recommend the structure shape of the diversion diffusion oblique cut flip bucket.This type of flip bucket achieves the purpose of large flip distance,good vertical and horizontal diffusion effect of flip flow,small fluctuation of downstream water cushion and remarkable energy dissipation effect.

关 键 词：溢洪洞 挑流鼻坎 模型试验 优化 温泉水利枢纽 

分 类 号：TV653.3[水利工程—水利水电工程]