| 弯曲河段床面分形特征及床面阻力试验研究 |
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| 引用本文： | 江磊,陈立,周银军,闫涛. 弯曲河段床面分形特征及床面阻力试验研究[J]. 水科学进展, 2011, 22(4): 502-508. DOI: 32.1309.P.20110709.1619.003 |
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| 作者姓名： | 江磊 陈立 周银军 闫涛 |
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| 作者单位： | 1.武汉大学水资源与水电工程科学国家重点实验室 湖北武汉 430072; |
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| 基金项目： | “十一五”国家科技支撑计划资助项目(2006BAB05B03-05); 国家自然科学基金资助项目(10932012)~~ |
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| 摘 要： | 根据概化水槽试验的结果,引入河床表面分形维数(以下简称BSD)用于河床表面形态的量化研究,并对BSD的计算方法、弯曲河道的分形特征及BSD值的大小与床面阻力的关系进行了探讨.结果表明,BSD的大小在大尺度上能够反映河段在纵向上的深泓起伏程度和横向的滩槽差,在小尺度上能反映河床表面相对的冲淤幅度,即弯曲河段床面具有明显的...
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| 关 键 词： | 弯曲河段 河床表面分形维数 分形特征 河床阻力 |
| 收稿时间： | 2010-07-12 |
Experimental study of bed surface fractional characteristics and bed form resistance in meandering channels |
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| JIANG Lei,CHEN Li,ZHOU Yin-jun,YAN Tao. Experimental study of bed surface fractional characteristics and bed form resistance in meandering channels[J]. Advances in Water Science, 2011, 22(4): 502-508. DOI: 32.1309.P.20110709.1619.003 |
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| Authors: | JIANG Lei CHEN Li ZHOU Yin-jun YAN Tao |
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| Affiliation: | 1.State Key Lab of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China;2.Yangtze River Scientific Research Institute, Wuhan 430010, China |
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| Abstract: | The riverbed morphology is quantitatively evaluated using the generalized data from flume experiments to calculate the fractal dimension of riverbed surface(hereinafter referred to as the BSD).Discussions are given on the method of BSD calculations,on the fractional characteristics in meandering channels,as well as on the relationship between the BSD and the bed form resistance.The result shows that the BSD value is able to represent the longitudinal change in talweg,transverse geometric changes in foreshor... |
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| Keywords: | bend reach bed surface fractal dimension fractal properties bed resistance |
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