| 复式梯形断面临界水深计算公式 |
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| 引用本文： | 王正中,芦琴,冷畅俭,杨健康.复式梯形断面临界水深计算公式[J].长江科学院院报,2006,23(5):58-60. |
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| 作者姓名： | 王正中 芦琴 冷畅俭 杨健康 |
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| 作者单位： | 西北农林科技大学,水利与建筑工程学院,陕西,杨凌,712100;中国科学院,冻土工程国家重点实验室,兰州,730000;西北农林科技大学,水利与建筑工程学院,陕西,杨凌,712100;西北农林科技大学,教务处多媒体教学部,陕西,杨凌,712100 |
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| 摘 要： | 梯形明渠临界水深实质上是求解含一个参数的一元六次方程，理论上无解析解，现已有简捷、准确、通用的直接计算方法；复式梯形断面明渠临界水深实质上是求解含两个参数的一元六次方程，理论上更无解析解。在梯形断面临界水深研究的基础上，经过数学变换，并应用迭代理论，提出了复式梯形断面明渠临界水深的简捷、准确、通用的直接计算公式，最大误差为1.49%，能满足生产实践的需要。
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| 关 键 词： | 复式梯形断面 临界水深 计算公式 |
| 文章编号： | 1001-5485（2006）05-0058-03 |
| 收稿时间： | 2005-11-27 |
| 修稿时间： | 2005-11-27 |
Formula for Calculating Critical Depth of Duplex Trapezoidal Open Channel |
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| WANG Zheng-zhong,LU Qin,LENG Chang-jian,YANG Jian-kang.Formula for Calculating Critical Depth of Duplex Trapezoidal Open Channel[J].Journal of Yangtze River Scientific Research Institute,2006,23(5):58-60. |
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| Authors: | WANG Zheng-zhong LU Qin LENG Chang-jian YANG Jian-kang |
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| Affiliation: | 1. College of Hydraulic and Construction Engineering of NWSUAF, Yangling 712100,China; 2. State Key Lab. of Jelly Soil Engineering,Chinese Academy of Science, Lanzhou 730000, China; 3Multi-media Teaching Department of Educational Administration of NWSUAF, Yangling 712100, China |
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| Abstract: | In fact, the formula for calculating critical depth of duplex trapezoidal is to deal with a formula which has two parameters whose highest power is six, but in theory there is no answer. This article introduces a short -cut, correct and common-used method for calculating critical depth of duplex trapezoidal channel obtained from iteration theory. The maximum error of calculated results is 1.49 %. This method has the advantages of applying to a large range and simplicity. |
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| Keywords: | duplex trapezoidal section critical depth calculating formula |
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