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本文试验研究了异侧竖缝式鱼道的主流轨迹、主流速度的沿程变化规律、横向流速分布的特征及其随流量的变化情况,并进行了放鱼试验。试验研究是在浙江工业大学大比尺鱼道中进行的,考虑5种典型流量(Q=8.78,18.94,27.55,34.95,40.65L/s),取h/3和2h/3两个水深,沿每一水深平面纵向有12条横线(x=0,10,20,30,40,50,60,70,80,90,100,110cm),每条横线上布设27个测点。通过试验研究,提出主流轨迹的经验公式、主流速度沿程变化的关系式、横向流速分布特征的半理论半经验公式等。另外,通过放鱼试验,给出过鱼对象(鲫鱼、河鳗)在主流低速区以及沿主流轨迹的溯游特性。
In this paper, we studied the main trajectory, the variation of the main velocity, the characteristics of the lateral flow velocity distribution and the variation with the flow rate of the vertical slits, and carried out the fish releasing experiment. The experimental study was carried out in the large scale footway of Zhejiang University of Technology. Five typical flow rates (Q = 8.78, 18.94, 27.55, 34.95 and 40.65 L / s) were considered and two water depths of h / 3 and 2 h / There are 12 horizontal lines (x = 0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 and 110 cm) in the vertical direction of each water depth plane. 27 measurement points are laid on each horizontal line. Through experimental research, the empirical formula of the mainstream trajectory, the relationship between the variation of the mainstream velocity and the semi-theoretical semi-empirical formula of the lateral flow velocity distribution are proposed. In addition, through the fish-letting test, the tracing characteristics of the fish (crucian carp, river eel) in the mainstream low-speed area and along the main track are given.