| 南水北调中线工程渠道糙率的系统辨识 |
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| 引用本文： | 杨开林,汪易森.南水北调中线工程渠道糙率的系统辨识[J].中国工程科学,2012,14(11):17-23. |
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| 作者姓名： | 杨开林 汪易森 |
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| 作者单位： | 中国水利水电科学研究院流域水循环模拟与调控国家重点实验室，北京;国务院南水北调工程建设委员会专家委员会，北京 |
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| 基金项目： | 国务院南水北调工程建设委员会专家委员会重点专项基金 |
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| 摘 要： | 提出了分析调水工程渠道沿程糙率的系统辨识新方法。依据水力学原理,建立了渠道沿程糙率与粗糙高度ks和水力半径R的函数关系,然后通过数学变换提出了适合最小二乘法进行系统辨识的线性模型。并以南水北调中线工程原型观测资料为基础,考虑渠道断面形状、底坡、渠长变化的影响,应用系统辨识的方法消除水力测量随机误差的干扰,得到了通用的渠道沿程糙率计算公式。
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| 关 键 词： | 渠道 糙率 系统辨识 最小二乘法 |
| 收稿时间： | 2010/12/14 0:00:00 |
| 修稿时间： | 1/5/2011 12:00:00 AM |
System identification of channel roughness for middle route project of south to north water diversion |
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| Yang Kailin and Wang Yisen.System identification of channel roughness for middle route project of south to north water diversion[J].Engineering Science,2012,14(11):17-23. |
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| Authors: | Yang Kailin and Wang Yisen |
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| Affiliation: | 1.China Institute of Water Resources and Hydropower Research,State Key Laboratory of Simulation and Regulation of Water Cyde in River Basin,Beijing 100038,China;2.Expert Committees,Construction Committee of South-to-North Water Diversion of State Council,Beijing 100053,China) |
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| Abstract: | This paper presents a new method for the system identification of channel roughness for the water diversion projects. According to the principle of hydraulics, established the relationship among channel roughness, rough height ks and hydraulic radius R, and deduce the linear model by means of the mathematical transformation to make use of the least square method for the identification. Finally, based on the prototype observation data from the south to north water diversion project and considering the influence of channel section shapes, bottom slopes and lengths etc, a universal formula is obtained for calculation of channel roughness by the system identification. |
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| Keywords: | channel roughness system identification least square method |
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