上沟水利枢纽溢流坝水工模型试验研究

The research on hydraulic model test of overfall dam for Shanggou key water control project

根据该工程坝址下游特殊的地形地质条件,通过建立1∶60水工物理模型,对溢流坝在不同运行条件下的水流流态进行了观测,对其在下游河床和两岸山体造成的冲刷问题和可能产生雾化诱发山体滑坡问题进行了研究,给出了闸门泄流调度运行控制方案;同时对溢流坝的泄流能力、冲坑深、挑距、电站尾水影响及坝面空蚀空化问题进行了试验研究,对溢流坝闸墩形式、挑角及电站尾水导墙的体型布置进行了优化。

According to the special topographic and ge- ological condition of the damsite＇s lower reaches, by es- tablishing the hudraulic phusical model of Shanggou Overfall Dam in propontion as one to sixty, we make observations of the dam＇s flow form under different con- ditions at operation, a thorough research on the prob- lems of the scour which will be caused by the lower ri- verbed and mountain massif, and the landslide which will be brought out by the atomagation produced likely and, moreover, the operation control ways of sluice gate＇s discharge dispatch are given. At the same time we make a rather thorough test research on the prob- lems of the dam＇s discharge capacity, scouring pit depth, deflection distance, influence of hydropower station＇s tail water and cavitation and cavitation ero- sion. Especially we conduct to optimize the designs for the form of the dam＇s pier,deflector angle and the type of build for the tail tailrace guide end wall of the power station.