挑距受限情况下挑流消能的体型优化  

Optimization of flow dissipation structure under constrained span conditions

作　　者：付庭玉 FU Tingyu(Anhui Rongjing Engineering Design and Consulting Co.,Ltd.,Hefei 230051,China)

机构地区：[1]安徽荣景工程设计咨询有限公司,安徽合肥230051

出　　处：《江淮水利科技》2024年第3期33-35,47,共4页Jianghuai Water Resources Science and Technology

基　　金：安徽省自然科学基金项目(2008085MD118)。

摘　　要：新建拜年山水库溢洪道采用连续式挑流消能,为避免泄洪对溢洪道下游右岸进场道路及岸坡造成冲刷破坏,通过分析鼻坎挑角、挑坎顶高程等因素对挑距的影响和比较不同方法在计算结果上的差距,将溢洪道挑流体型调整为挑弧半径11.0 m、挑坎顶高程288.50 m、挑角20°,增设下游钢筋混凝土护坦能有效减轻冲刷破坏,可为类似工程提供参考和借鉴。To prevent erosion and damage to the downstream right bank access road and slope due to flood discharge,the spillway chute of the new Bainianshan Reservoir adopts a continuous flow dissipation structure.By analyzing factors such as the nose angle,crest elevation,and their impact on the span,and comparing different methods based on calculation results,the spillway chute flow dissipation structure was adjusted to include a nose radius of 11.0 meters,crest elevation of 288.50 meters,and an angle of 20°.Additionally,downstream reinforced concrete aprons were added to effectively reduce erosion damage.This design can serve as a reference for similar projects in the future.

关 键 词：挑流消能 挑距 冲刷破坏 挑流鼻坎 体型优化 

分 类 号：TV222.2[水利工程—水工结构工程]