《Table 5 Sediment control efficiency parameters from experimental results.》

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《Determination of optimal grid opening width for herringbone water-sediment separation structures based on sediment separation efficiency》

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Notes:GSD ID means the identity of grain size distribution；λ2 is the fine separation ratio；D/df is a dimensionless parameter，in which D is the grid opening width and df the mean diameter of fine coarse sediment of the total input sediment.GII and GIII ar

Regression ofλ2 against D/df using the dataset of Table 5 demonstrated that the coefficients a=0.996≈1.0andb=-1.495≈-1.50withan R2=0.809 under the P=95%confidence intervalafter removal of two abnormal values，as Figure 7shows.Thus，pf can be expressed by D/df with the power function described in Eq.12.