标准摘要
[中文适用范围]： 本国际标准规定了使用复合结构中标准堰和/或水槽的任意组合测量河流和人工渠道流量的方法。 有关堰和/或水槽选择的指导，请参阅 ISO 8368。 所有结构都可以在模块化流量范围内运行，但只有有限数量的结构可以在淹没（非模块化）流量范围内使用（参见第 4 条）。 复合堰提高了低阶段流量测量的质量。 附件 A 描述了速度分布的特性。 附件 B 描述了在淹没（非模块化）流量范围内运行的标准化结构和流量计算方法。 附件 C 给出了流量测量计算的方法和示例。 不带分流墩的复合测流结构需要进行现场或模型校准，不属于本国际标准的范围。 [外文原描述]： This International Standard specifies the methods of measurement of flow in rivers and artificial channels, using any combination of standard weirs and/or flumes in a compound structure. For guidance on the selection of weirs and/or flumes, refer to ISO 8368. All structures can be operated in the modular flow range, but only a limited number of structures can be used in the drowned (non-modular) flow range (see clause 4). Compound weirs improve the quality of discharge measurements at low stages. The characteristics of velocity distribution are described annex A. Structures standardized for operation in the drowned (non-modular) flow range and the method of computation of flow are described in annex B. Methods and examples of flow measurement calculations are given in annex C. Compound flow-measuring structures without divide piers need in situ or model calibrations and are not covered by this International Standard.
英文名称Hydrometric determinations — Flow measurements in open channels using structures — Compound gauging structures