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针对目前用于无压马蹄形过水断面均匀流水深计算方法存在受图表束缚或运算繁复等问题，本文采用优化拟合的方法，通过对有关公式的拟合，提出了马蹄形过水断面均匀流水深的简化计算式，求解简捷，结果的最大误差为0.32％。
Aiming at the problems that the calculation method of uniform flow depth for pressureless horseshoe cross section is constrained by charts or complicated operation, this paper adopts the method of optimization fitting, and through the fitting of the relevant formulas, The simplified formula, the solution is simple, the maximum error of the result is 0.32%.