【摘要】 该文讨论了梯弧形明渠输水断面的特点,导出了梯弧形明渠水力最佳断面的几何尺寸及水力要素的计算式;论证了梯弧形比工程中常用的梯形断面,具有较好的水力经济性,更大的边坡稳定性及更小的水流冲淤性等优点,值得在工程实践中推广使用。文中还编制了不同边坡系数值时,设计计算梯弧形水力最佳断面尺寸的系数表,使运算简捷方便,最后给出了算例。更多还原

【Abstract】 In this paper, we discuss the characteristics of the hydraulic cross section and derive a for- mula rof calculatiog the geometric dimensions and the hydraulic properties for the best cross section with trapezoid-arc form. We show that compared to the commonly used trapezoidal shape of the hy- draulic cross section, the trapezoid-are section is more economic; has better side slope stability; and re- duces the sedimentation and alluvial of the canal flow. Therefore it is worth extension and application in practice. To make the design easier, we also tabulate different parameters for calculating the dimen- sions of the best hydraulic cross section with trapezoid-arc form in various side-slope coefficients. At the end, we give an example of using these tables.更多还原