某水电站泄水建筑物由多条泄洪洞整体联合泄流, 具有下泄流量大、水头高、出口位置河道狭窄等特点, 且下游水垫塘所在位置即为河道的转弯处, 因此会有下泄水流的能量集中和挑流水舌的归槽偏离问题。针对上述2个突出问题, 以大比尺水工模型试验为基础, 提出了与实际情况相对应的挑坎布置方案, 经过多方案的分析比选并综合考虑整体联合泄洪消能的因素, 提出了最优的推荐布置方案, 可为同类型工程枢纽的消能防冲设计提供借鉴。
Abstract
The outlet structure of the hydropower station in this research consists of several spillway tunnels for joint flood discharge. It has a large discharge volume and high water head, with narrow river course at the outlet, and the downstream plunge pool is located at the turn of the river. Owing to this, the energy of the discharge is concentrated and the returning of the trajectory nappe is deviated. To address these two problems, we put forward the flip bucket layout suitable for the actual situation by means of large-scale hydraulic model test. By comparing different schemes and considering the overall joint discharge and energy dissipation, we proposed the optimal layout design. It could serve as a reference for similar projects.
关键词
水工模型试验 /
泄洪洞 /
消能防冲 /
联合泄流 /
挑坎优化
Key words
hydraulic model test /
spillway tunnel /
energy dissipation and erosion control /
joint discharge /
flip bucket optimization
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