三峡蓄水后典型河段分形维数的变化分析

周银军; 陈立; 欧阳娟; 刘金

三峡蓄水后典型河段分形维数的变化分析

周银军^1,2,
陈立^1,,
欧阳娟¹,
刘金¹

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;
2.
长江科学院河流研究所, 湖北, 武汉, 430010

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(10672125)

详细信息

作者简介:
周银军(1983- ),男,河南信阳人,博士研究生,主要从事水力学及河流动力学研究工作.E-mail:zhouyinjun1114@126.com

通讯作者:
陈立,E-mail:chenliwuhee@263net

中图分类号: TV147.5
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- 文章访问数: 142
- HTML全文浏览量: 55
- PDF下载量: 573
出版历程
- 收稿日期: 2009-06-30
- 刊出日期: 2010-05-24

Changes in fractal dimensions of representative reaches after the impoundment of Three Gorges Project

1.
State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China;
2.
Yangtze River Scientific Research Institute, Wuhan 430010, China

Funds: The study is financially supported by the National Key Technologies R&D Program of China during the 11th Five year Period Plan (No 2006BAB05B03-05) and the National Natural Science Foundation of China (No 10672125)

摘要

摘要: 针对三峡工程蓄水后下游河道河床表面形态的变化,采用分形维数对河床表面形态进行量化,并分析河道冲淤调整特点,对河床表面分形维数(BSD)的变化特点及物理意义进行探讨。结果表明,BSD与河床各个剖面形态之间的关系是整体与部分的关系,BSD能全面地反映床面形态的复杂程度。三峡蓄水后,宜昌-虎牙滩和宜都河段BSD明显增大,关洲河段增大幅度较小,而芦家河河段BSD值略有减小,同时,各河段BSD的变化可在一定程度上表征三峡蓄水后下游河道河床综合阻力的调整结果。可通过对各河段演变趋势的分析,来预测其BSD的变化,进而为分析其阻力和水位的变化趋势提供依据。
- 河道 /
- 三峡工程 /
- 河床表面分形维数 /
- 演变 /
- 河床综合阻力
Abstract: The changes n erosion-deposition pattems of downnstream riaerbed surface after the impoundnent of Three Gorges Project (TGP) are quantified by the river bed surface fractal dimension (BSD).The changing character and the physical mechanism associated with the changes are also analyzed.The study reveals a whole partre lationship between the BSD and each cross-section.The complexity of river bed surface can be well represented by BSD.After the TGP impoundment, there is a significant increase in BSD along the Huyatan and Yidu reaches While, less increase is found for the Guanzhou reach and the opposite result is obtained in the Lujiahe reach.The change in BSD of each river reach is able to characterize the deformation in the river bed surface, which is resulted from the new regime of integrated frictions after the TGP impoundment.The BSD can thus be predicted through analyzing the trend change in each reach, which provides necessary data for studying the new relationship of bed friction and water level.
- waterways /
- Three Gorges Project (TGP) /
- bed surface fractal dimension /
- river evolution /
- bed friction

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参考文献(19)

[1]	李义天,孙昭华,邓金运.论三峡水库下游的河床冲淤变化[J].应用基础与工程科学学报,2003,11(3):283-295.(LI Yi-tian,SUN Zhao-hua,DENG Jin-yun,et al.A study on riverbed erosion downstream from the Three Gorges Reservoir[J].Journal of Basic Science and Engineering,2003,11(3):283-295.(in chinese))
[2]	谢作涛,侯卫国,任吴.葛洲坝下游宜昌-杨家脑河段平面二维水沙数学模型[J].水科学进展,2008,19(3):309-316.(XIE Zuo-tao,HOU Wei-guo,BEN Hao.2D horizontal modeling for the movement of flow and sediment from Yichang to Yangjianao reach at the Gezhouba downstream[J].Advances in Water Science,2008,19(3):309-316.(in Chinese))
[3]	陈立,明宗富.河流动力学[M].武汉:武汉大学出版社,2001:2-3.(CHEN Li,MING Zong-fu.River mechanics[M].Wuhan:Wuhan University Press,2001:2-3.(in Chinese))
[4]	葛华,李义天,朱玲玲,等.三峡蓄水初期宜昌枯水位稳定机理初步分析[J].四川大学学报:工程科学版,2009,41(1):47-53.(GE Hua,LI Yi-tian,ZHU Ling-ling,et al.Primary analysis of stability mechanism of Yichang low-water level during TGP's initial impoundment period[J].Journal of Sichuan University:Engineering Science Edition,2009,41(1):47-53.(in chinese))
[5]	NIKORA V I.Fractal sturetures of river plan forms[J].Water Resour Res,1991,27(4):1327-1333.
[6]	冯平,冯焱.河流形态特征的分维计算方法[J].地理学报,1997,7(4):324-330.(FENG Ping,FENG Yan.Calculation on fractal dimension of river morphology[J].Acta Geographica Sinica,1997,7(4):324-330.(in Chinese))
[7]	马宗伟,许有鹏,李嘉峻.河流形态的分维及与洪水关系的探讨:以长江中下游为例[J].水科学进展,2005,16(4):530-534(MA Zong-wei,XU You-peng,LI Jia-jun.River fractal dimension and the relationship between river fractal dimension and river flood:Case study in the middle and lower course of the Yangtze River[J].Advances in Water Science,2005,16(4):530-534.(in Chinese))
[8]	白玉川,黄涛,许栋.蜿蜒河流平面形态的几何分形及统计分析[J].天津大学学报,2008,41(9):1052-1056.(BAI Yu-chuan,HUANG Tao,XU Dong.Fractal and statistic analysis of planar shape of meandering rivers[J].Journal of Tianjin University,2008,41(9):1052-1056.(in Chinese))
[9]	ROBERT A.Statistical properties of sediment bed profiles in alluvial channels[J].Math Geol,1988,20(6):205-225.
[10]	金德生,陈浩,郭庆伍.河道纵剖面分形-非线性形态特征[J].地理学报,1997,52(2):154-162.(JIN De-sheng,CHENHao,GUO Qing-wu.A pereliminary study on non-linear properties of channel longitudinal profiles[J].Acta Geographica Sinica,1997,52(2):154-162.(in Chinese))
[11]	周银军,陈立,刘欣桐,等.河床表面分形特征及其分形维数计算方法研究[J].华东师范大学学报:自然科学版,2009(3):170-178.(ZHOU Yin-jun,CHEN Li,LIU Xin-tong,et al.Study on fraetal properties of river bed and the calculation method of fractal dimension[J].Journal of East China Normal University:Natural Science,2009(3):170-178.(in Chinese))
[12]	IVAN B T L,REINALDO R R,FERNANDO M R,et al.Water level dynamics in the Amazon flood plain[J].Advances in Water Resources,2003,26(7):725-732.
[13]	谢和平,张永平,宋晓秋.分形几何:数学基础与应用[M].重庆:重庆大学出版社,1991:189-192.(XIE He-ping,ZHANG Yong-ping,SONG Xiao-qiu.Fractal geometry:Mathematical base and application[M].Chongqing:Chongqing University Press,1991:189-192.(in Chinese))
[14]	崔灵周,肖学年,李占斌.基于GIS的流域地貌形态分形盒维数测定方法研究[J].水土保持通报,2004,24(2):38-40.(CUI Ling-zhou,XIAO Xue-nian,LI Zhan-bin.GIS-based approach for measuring the fractal box dimension of watershed topography[J].Bulletin of Soil and Water Conservation,2004,24(2):38-40.(in Chinese))
[15]	汪富泉,曹叔尤,丁晶.河流网络的分形与自组织及其物理机制[J].水科学进展,2002,13(3):368-376.(WANG Fu-quan,CAO Shu-you,DING Jing.Fractal,self-organization and its physical mechanism of river networks[J].Advances in Water Science,2002,13(3):368-376.(in Chinese))
[16]	MICHEAL S,BOMMANNA G K,MONICA B E.The effect of bed age and shear stress on the particle morphology of eroded cohesive river sediment in an annular flume[J].Water Research,2008,42(15):4179-4187.
[17]	PHILIP R K,JOHN M F,DAVID P L,et al.A roughness-corrected index of relative bed stability for regional stream surveys[J].Geomorphology,2008,99(4):150-170.
[18]	XIE H P,WANG J A,STEIN E.Direct fractal measurement and multifractal properties of fracture surface[J].Physics Letters A,1998,242(2):41-50.
[19]	沈中原,李占斌,李鹏,等.流域地貌形态特征多重分形算法研究[J].水科学进展,2009,20(3):385-391.(SHEN Zhong-yuan,LI Zhan-bin,LI Peng,et al.Multifractal arithmethic for watershed topographic feature[J].Advances in Water Science,2009,20(3):385-391.(in Chinese))

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文章访问数: 142
HTML全文浏览量: 55
PDF下载量: 573
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三峡蓄水后典型河段分形维数的变化分析

作者简介: 周银军(1983- ),男,河南信阳人,博士研究生,主要从事水力学及河流动力学研究工作.E-mail:zhouyinjun1114@126.com

通讯作者: 陈立,E-mail:chenliwuhee@263net

计量

出版历程

Changes in fractal dimensions of representative reaches after the impoundment of Three Gorges Project

计量

出版历程

目录

作者简介:
周银军(1983- ),男,河南信阳人,博士研究生,主要从事水力学及河流动力学研究工作.E-mail:zhouyinjun1114@126.com

通讯作者:
陈立,E-mail:chenliwuhee@263net