悬链线形渠道正常水深的线性计算公式

发布时间：2018-01-19 20:22

本文关键词： 渠道悬链线形断面正常水深计算公式　出处：《人民黄河》2016年12期 　论文类型：期刊论文

【摘要】：悬链线形渠道是输水工程中新兴的渠道断面形式,其正常水深是渠道设计、运行管理的重要水力要素,但其基本方程为超越方程,数学上无解析解。目前其正常水深计算仍然存在过程繁琐、误差较大和公式复杂等缺陷,在总结前人研究的基础上,根据悬链线形水力最优断面特点,结合工程实际应用情况,合理地确定了公式的适用范围。通过对悬链线形断面均匀流基本方程进行数学变换,对引入的无量纲参数与无量纲水深的关系进行分析和计算,应用曲线拟合和优化原理提出悬链线形渠道均匀流正常水深的线性计算公式,在工程常用范围内计算正常水深的最大相对误差小于0.583%。该线性计算公式形式简单、精度高、适用范围广。
[Abstract]:Catenary linear channel is a new channel section form in water conveyance project. Its normal water depth is an important hydraulic factor in channel design and operation management, but its basic equation is transcendental equation. There is no analytical solution in mathematics. At present, there are still some defects in the calculation of normal water depth, such as complicated process, large error and complicated formula. Based on the summary of previous studies, the characteristics of hydrodynamic optimal section of catenary line are summarized. Combined with the practical application of the project, the application range of the formula is reasonably determined, and the basic equation of the uniform flow of catenary line section is transformed by mathematical method. The relationship between dimensionless parameters and dimensionless water depth is analyzed and calculated. A linear formula for calculating the normal water depth of catenary channel is proposed by using curve fitting and optimization principle. The maximum relative error of calculating normal water depth is less than 0.583.The linear formula is simple in form, high in accuracy and wide in application.
【作者单位】：惠州学院建筑与土木工程学院;
【基金】：惠州学院引进教授、博士科研启动基金资助项目(C510.0211);惠州学院重点培育学科项目(ZDPYXK1404)
【分类号】：TV133
【正文快照】： 曲线形渠道具有如下特点:(1)水力半径小,沿程水头损失小,水力学条件优越;(2)冻胀分布均匀,冻胀变形很小且易复位;(3)因曲线形渠道方程的连续性,故在制模、施工中更容易计算和控制。曲线形渠道在水力发电、灌溉和排水、城市给排水等工程中应用广泛,许多学者针对弧底梯形断面[1-

【相似文献】