| 引用本文： |
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董德信,李瑞杰,陈波.基于多元线性回归方法的水流挟沙力公式建立与验证[J].广西科学,2011,18(1):83-87. [点击复制]
- DONG De-xin,LI Rui-jie,CHEN Bo.Establishment and Validation of the Sediment Carrying Capacity Formula Based on Multiple Linear Regression Method[J].Guangxi Sciences,2011,18(1):83-87. [点击复制]
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| 摘要: |
| 利用多元线性回归的方法,通过2549组水槽泥沙实验数据,建立包含水力与泥沙影响因子在一定组合形式下的水流挟沙力公式,并采用2850组天然河道的实测资料对建立的水流挟沙力公式进行分析验证,证实流速是挟沙力的重要影响因素,泥沙因子也不能忽视。然后比较分析水力坡度在挟沙力研究中的优劣,进一步分析水流挟沙力公式的简化形式,指出包含不同影响因子的挟沙力公式的特点与优势,为实际水流挟沙力的计算提供参考。 |
| 关键词: 挟沙力 水流强度 流速 泥沙 水力坡度 |
| DOI： |
| 投稿时间：2010-08-05修订日期：2010-12-10 |
| 基金项目:国家自然科学基金:产生北仑河口东向侵蚀的动力因子的研究(批准号:40766001)项目资助 |
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| Establishment and Validation of the Sediment Carrying Capacity Formula Based on Multiple Linear Regression Method |
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DONG De-xin1, LI Rui-jie2, CHEN Bo1
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| (1.Guangxi Academy of Sciences, Nanning, Guangxi, 530007, China;2.Key Laboratory of Coastal Disaster and Defence, Ministry of Education, Hehai University, Nanjing, Jiangsu, 210098, China) |
| Abstract: |
| Based on the multiple linear regression analysis method, the different sediment carrying capacity formulas, which contain different combination circumstances of hydraulic factor and sediment factor, are set up with 2549 groups of flume sediment data.2850 groups of natural river sediment data are used to verify the functions.It proves that the velocity is the most important factor, but the sediment factor can not be ignored.Meanwhile, the paper discusses the pros and cons of hydraulic gradient in studying sediment carrying capacity, and analyzes the simplified form of the sediment carrying capacity formula, also points out the characteristics and advantages of the formula that contain different impact factors.It provides a reference for calculating sediment carrying capacity in engineering practice. |
| Key words: sediment carrying capacity flow intensity velocity sediment hydraulic gradient |
