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文中通过野外資料及室內試驗对比分析,研究了河道急流段的糙率問題。作者认为:急流河段的糙率不仅是泥沙組成及沙洲形态的函数,同时也受到泥沙混合系数(作者用β来表示,β=B+(A+B)/A+(A+B))的影响。游蕩性河道可用断面形状重心与中心間距e除以河寬B来表示。通过实驗及野外資料求得
Through the field data and laboratory tests, the paper studies the roughness of river rapids. The author thinks that the roughness of the rapids is not only a function of sediment composition and sandbar morphology, but also is affected by sediment mixing coefficient (β = B + (A + B) / A + (A + B)) Impact. Wandering river available cross-sectional shape center of gravity and the center distance e divided by the river width B to represent. Obtained through experiments and field data