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提要本文建立的挟沙力与幺速的关系式,并以此与水流连续方程、泥沙连续方程等式结合进行冲淤量验证计算,结果与实测值吻合较好。进一步应用此式对三门峡水库改建后潼关以下库容的予估,结果令人满意。应用挟沙力公式进行冲淤量计算,在潼关以下库区还属少数,较之应用输沙率经验关系式估算冲淤量,在理论上前进了一步,具有一定的生产意义。
Abstract This paper establishes the relationship between sediment-carrying force and unitary velocity, and calculates the amount of scouring and silting with the equation of continuous flow equation and sediment continuous equation. The result is in good agreement with the measured value. This formula is further applied to estimate the reservoir capacity below Tongguan after the Sanmenxia Reservoir reconstruction, with satisfactory results. Calculating the amount of scouring and silting using the sediment-carrying capacity formula is also a minority in the reservoir area below Tongguan. Compared with the empirical correlation of sediment transport rate, the amount of scouring and silting can be estimated, which is one step in theory and has certain productive significance.