Abstract: By analysis of the hydraulic calculation formula for radial gate in Handbook of Hydraulic Calculations, Design Code for Spillway, Design Specification for Sluice and hydraulics, combined with the hydraulic model test, the correction of flow coefficient and issues need attention are advanced in this paper, for reference.

Key words: radial gate, discharge characteristics, model tests, flow coefficient

摘要： 通过对《水力计算手册》、《溢洪道设计规范》、《水闸设计规范》、水力学中弧形闸门泄流水力计算公式的对比运用，结合水工模型试验，提出闸孔出流计算公式中流量系数的修正以及应注意的问题。

关键词: 弧形闸门, 泄流特性, 模型试验, 流量系数