抛物线类断面渠道共轭水深计算通式

摘要

Conjugate water depth using conventional methods for solving the parabolic class canal calculate not only the complexity of the process and the results accuracy is not high. The simplified formula applies only to a particular form of parabolic-shaped cross-section (semi-cubic, square and cubic), and the formula in the form is not serious enough simplified. By introducing dimensionless parameters relative depth on the basis of parabolic type canal conjugate water depth basic formula deformation finishing, to ensure solving achievements accuracy to meet the requirements of engineering design for the premise, the optimization of the function equation fitting to obtain expressed in a simple form, calculate the simple approximate calculation formula, the actual application value.%采用常规方法求解抛物线类断面渠道共轭水深，不但计算过程繁复，且成果精度不高。而目前有关的简化计算公式仅适用于某种特定形式的抛物线形断面，其公式形式尚不够简化。通过引入无量纲相对水深参数，在对抛物线类型断面渠道共轭水深基本计算公式变形整理的基础上，以保证求解成果精度满足工程设计要求为前提，经对函数高次方程的优化拟合，获得了表达形式简单、计算简捷的近似计算通式，具有实际应用推广价值。