斜鼻坎挑流消能在黑石罗水库的应用  

Application of Flip Trajectory Bucket Lip Ski-jump Energy Dissipation in Heishiluo Reservoir

作　　者：邱勇[1] 龚爱民[1] 

机构地区：[1]云南农业大学水利学院,云南昆明650201

出　　处：《水电能源科学》2016年第3期101-103,共3页Water Resources and Power

摘　　要：针对黑石罗水库现状连续式鼻坎消能效果较差,可能威胁河床及岸坡稳定的现状,通过水工模型试验,将挑流消能连续式鼻坎优化为斜鼻坎,即将鼻坎挑射角度由定值调整为渐次增大,同时偏转大角度挑射一侧反弧段边墙至泄槽轴线位置,去除小角度挑射一侧边墙及部分反弧段底板,迫使出坎水舌在平面上转向的同时沿竖向大幅拉开,在保证出射水流平顺归入河床的同时,增大挑射水流和空气的接触面积,最大限度消除水体能量,从而降低水股对落点的冲刷,达到保护河岸及相邻建筑物安全的目的。试验结果表明,斜鼻坎可以很好地适应狭窄地形条件,有效降低挑射水流对鼻坎下游的冲刷。研究成果为类似工程提供了参考。In view of the problem that energy dissipation of continuous bucket could threaten the downstream riverbed and slope stability,through the hydraulic model test research,flip trajectory bucket lip was optimized.The goal angle of flip trajectory bucket lip was changed into variable angle gradually.The large angle side jets was deflected into anti-arc chute sidewall axis position.Then the small angle side wall and part of the side jets ogee floor were removed.It forced the hydraulic jump changing direction in the plane then turning sharply along the vertical opened.On one hand it made the ejection water flow smoothly into the riverbed.On the other hand,it increased the contact area between the water and air jets to maximize the elimination of the water body with the energy.Thereby water erosion point was reduced.Ultimately,it realized the goal of protecting the safety of river bank and adjacent buildings.Test results show that the oblique bucket can suitable for narrow terrain,and reduce ski-jump jets erosion of downstream bucket lip effectively.The research provides reference for similar projects.

关 键 词：斜鼻坎 挑流消能 狭窄地形 试验研究 

分 类 号：TV653[水利工程—水利水电工程]