长江三峡黄腊石和黄土坡滑坡分形分维分析

吴树仁; 石玲; 谭成轩; 胡道功; 梅应堂; 徐瑞春

Volume 25 Issue 1

Jan. 2000

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Article Navigation > Earth Science > 2000 > 25(1): 61-65

WU Shu-ren, SHI Ling, TAN Cheng-xuan, HU Dao-gong, MEI Ying-tang, XU Rui-chun, 2000. FRACTAL ANALYSIS OF HUANGLASHI AND HUANGTUPO LANDSLIDES IN THREE GORGES, CHANGJIANG RIVER, CHINA. Earth Science, 25(1): 61-65.

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FRACTAL ANALYSIS OF HUANGLASHI AND HUANGTUPO LANDSLIDES IN THREE GORGES, CHANGJIANG RIVER, CHINA

1.
Institute of Geomechanics, Chinese Academy of Geological Science, Beijing 100081, China
2.
Sanxia Explo- ration Survey Institute, Changjiang Water Conservancy Commission, Yichang 443003, China

Received Date: 1999-03-15
Publish Date: 2000-01-25

Abstract

Abstract

In order to discover a new approach to the quantitative analysis of the evolution and stability of the complex landslide trace pattern, the fractal theory is employed to analyze the geometrical fractal pattern of the self-similar boundary trace between the Huanglashi landslide and the Huangtupo landslide in the fore-reservoir region of the Three Gorges, Changjiang River. In addition, the box dimension method is employed to obtain the characteristic slope curves and fractal values for the corresponding fractal patterns of the active landslide cluster in the west of the Huanglashi landslide, the small landslide cluster in the east of the Huanglashi landslide, the whole landslide system of the Huanglashi landslide, and the Huangtupo landslide respectively. The computation results show that the trace pattern of each landslide cluster is characterized by its characteristic fractal value. The more complex the trace pattern, the clearer the structure layers, and the higher the fractal value. In particular, the highest fractal value is D =1.483 located in the active landslide cluster in the west of the Huanglashi landslide, and the lowest fractal value D =1.111 located in the Huangtupo landslide. The fractal analysis of the Huangtupo landslide and the Huanglashi landslide provides us with the following major conclusions: (1) The statistical self-similarity and the fractal structure are both present in the boundary trace between the landslides. (2) The macro-extension deformation process of the landslide trace pattern is characterized by the increase in the dimension instead of the decrease in the dimension. (3) The more complex the landslide trace pattern, the better the sequential order, the higher the fractal value, and the poorer the stability of the corresponding landslide. Therefore, the fractal dimension may serve as a statistical assessment criterion for the analysis of the complexity and stability of the landslide trace pattern.
- Huanglashi landslide,
- Huangtupo landslide,
- landslide trace pattern,
- fractal dimension

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References(16)

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