中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2012, Vol. 31 ›› Issue (5): 1042-1045.DOI: 10.3969/j.issn.1674-0696.2012.05.29

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长江重庆主城段河流长度分维数与洪水的关系

吴立春1,倪志辉2   

  1. 1.重庆第二师范学院,重庆400067; 2.重庆交通大学西南水运工程科学研究所,重庆400016
  • 收稿日期:2011-12-15 修回日期:2012-01-10 出版日期:2012-10-15 发布日期:2015-01-22
  • 作者简介:吴立春(1980—),女,重庆人,硕士,讲师,主要从事分形理论应用和计算机模拟方面的研究。E-mail:benny251@163.com。
  • 基金资助:
    重庆市教委科技项目( KJ111501、KJ110409) ; 重庆市自然科学基金( cstc2012A30002) ; 水利水运工程教育部重点实验室暨国家内 河航道整治工程技术研究中心开放基金( SLK2012A02)

Relationship Between Fractal Dimension of the Length in Section of Chongqing City of Yangtze River and the Flood

Wu Lichun1,Ni Zhihui 2   

  1. 1.Chongqing University of Education,Chongqing 400067,China; 2.Southwestern Research Institute of Water Transportation Engineering,Chongqing Jiaotong University,Chongqing 400016,China
  • Received:2011-12-15 Revised:2012-01-10 Online:2012-10-15 Published:2015-01-22

摘要: 应用分形理论对长江重庆主城段进行了分形标定。研究表明: 长江重庆主城段河流长度具有二阶分维特性; 河流长度分维数可以反映河道的弯曲程度,分维数越大,河道越弯曲; 在同一河段,河流长度分维值越大,河流的泄 洪能力越差,洪水发生的可能性和洪水的强度越大。

关键词: 分形维数, 变维分形, 洪水

Abstract: Although fractal theory provides a new method and means to study a number of complex natural phenomena,there is not constant dimension fractal manifestations strictly exist in the nature. A large number of complex phenomena needs to use variable dimension fractal to describe,and fractal characteristic of a river length is no exception. By using of variable fractal dimension to obtain the law of the length in section of Chongqing city of Yangtze River,the results conclude that: It does express a second-order accumulated variable-dimensional fractal phenomenon. And the dimension can reflect t the degree of bending of the river,the greater dimension,the more the river bend. It has different dimensions at a different location in the same river. In the same river,the larger dimension,the worse flow discharge capacity of the river,and the more obvious of the flood will be on the performance.

Key words: fractal dimension, variable dimension fractal, flood

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