标准摘要
[中文适用范围]： 本文件规定了测定站的阶段-流量关系的确定方法。 它规定了基于足够数量的放电测量以及相应的阶段测量来定义阶段-放电关系的精度。 本文件考虑了稳定和不稳定的渠道，并简要描述了从河内到河外流量过渡、转移控制、可变回水和滞后对水位-流量关系的影响。 没有详细描述确定双规站、超声波速度测量站和其他复杂额定曲线的流量的方法。 注：这些类型的额定曲线在其他国际标准、技术规范和技术报告中单独描述，并在参考书目中列出。 [外文原描述]： This document specifies methods of determining the stage?discharge relationship for gauging stations. It specifies an accuracy for defining the stage?discharge relationship based on a sufficient number of discharge measurements, complete with corresponding stage measurements. This document considers stable and unstable channels and includes brief descriptions of the effects on the stage?discharge relationship of the transition from inbank to overbank flows, shifting controls, variable backwater and hysteresis. Methods of determining discharge for twin-gauge stations, ultrasonic velocity-measurement stations and other complex rating curves are not described in detail. NOTE These types of rating curves are described separately in other International Standards, Technical Specifications and Technical Reports, which are listed in the Bibliography.
英文名称Hydrometry — Measurement of liquid flow in open channels — Determination of the stage–discharge relationship