液体比重测定法.流量测量结构中的Fishpasses

[中文适用范围]： 本国际标准规定了鱼道与流量测量结构集成的要求。 它确定了那些具有令人满意的水文校准数据的鱼道，并给出了计算组合流量和不确定性的方法。 注：流量测量结构和鱼道具有本质上不同的水力性能标准。 流量测量结构在均匀的流型下性能更好；相反，水流条件的变化可以改善鱼类的通过性能，使鱼类和其他水生生物能够选择最适合其运动方式的通过条件。 本国际标准并不表明所讨论的鱼道是鱼道的首选方法，也不表明它们足够好以至于可以牺牲通道性能以获得同时满足鱼道和流量测量要求的单一结构。 [外文原描述]： ISO 29606:2015 specifies requirements for the integration of fishpasses with flow measurement structures. It identifies those fishpasses which have satisfactory hydrometric calibration data and gives methods for computing combined flows and uncertainties. NOTE Flow measurement structures and fishpasses have inherently different hydraulic performance criteria. Flow measurement structures perform better with uniform flow patterns; conversely, fish passage performance is improved by the variability of the flow conditions that allow fish and other aquatic inhabitants to select the passage conditions that best meet their mode of movement. This International Standard does not suggest that the fishpasses discussed are the preferred methods of fish passage or that they are good enough that passage performance can be sacrificed to obtain a single structure that meets both the fish passage and flow measurement requirements.