现行的泄槽水面线是根据能量方程,用分段求和法计算,对于人工设计的溢洪道泄槽,多为矩形断面,能够明确写出其基本微分方程,可采用四阶龙格—库塔方法求解。与分段求和法相比,四阶龙格—库塔法具有计算速度快,精度高的优点。在工程设计中,泄槽水面线的计算可由四阶龙格—库塔法来替代现行的分段求和法。 The current truncated sump surface line is calculated by the piecewise sum method according to the energy equation. For the manually designed spillway spillway, the cross section of the spillway is mostly rectangular in cross section. The basic differential equation can be clearly written out. Fourth-order Runge-Kutta Method to solve. Compared with the piecewise summation method, the fourth order Runge-Kutta method has the advantages of fast calculation and high precision. In engineering design, the calculation of venting surface line can be replaced by the fourth-order Runge-Kutta method instead of the current piecewise summation method.