摘要
Abstract
Aiming at the large flow, high head, long diversion tunnel of hydropower station, restricted terrain and geological conditions for the layout of surge shaft, the conventional type could not meet the design requirements, comparing a variety of surge shaft types, through the mathematical model of hydraulic calculation and model test demonstrated the rationality of mixed type surge shaft design.The results show that the mixed type of surge shaft combined with the advantages of water chamber type and impedance type surge shaft, the minimum water level fluctuation, the minimum height and the minimum volume and the least engineering quantity, at the same time wave decay quickly, in normal operation, after the junction with surge shaft and pressure waterways small head loss, simple structure, convenient construction.The mixed type surge shaft mathematical model of hydraulic calculation results with the model test results are very close to each other, the surge shaft to the maximum surge water level is lower than the water chamber straight wall, the water level is higher than the minimum surge shaft floor.So the selection of mixed type surge tank is feasible.关键词
混合式调压井/特征线法/模型试验/涌浪水位/阻抗孔Key words
mixed type surge shaft/characteristic line method/model test/swell water level/impedance hole分类
建筑与水利
