用传统的试算法和图解法求水力学中的明渠均匀流正常水深计算量大,且精度不高。文中应用QB语言编程求解问题,既快又精确,取得了较满意的结果。 Calculating the normal depth of open channel in hydraulics by traditional trial method and graphic method is computationally intensive and the accuracy is not high. In this paper, QB language programming is used to solve the problem, which is fast and accurate and achieves satisfactory results.