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在查阅大量资料以及考察国内十几个大型输水工程并与各地专家及技术人员进行广泛交流的基础上，对混凝土渠道糙率的设计情况与实测资料进行综述，并作了初步分析。分析结果表明：对于能基本保持设计条件的渠道，其实际水头损失小于设计值，对于施工质量较好的现浇混凝土渠道，其均匀流段的曼宁糙率系数不大于０．０１３。同时，给出了不同衬砌特性的混凝土渠道糙率推荐表
After reviewing a large amount of data and inspecting over a dozen large-scale water transfer projects in China, and extensively communicating with experts and technicians from all over the country, the design conditions and measured data of the roughness of concrete channels were reviewed and preliminary analyzes were made. The results show that the actual head loss is less than the design value for the channels that can basically maintain the design conditions. For the cast-in-place concrete channels with good construction quality, the Manning roughness coefficient of the uniform flow section is not greater than 0.013. At the same time, the recommended roughness of concrete channel with different lining properties is given