Welcome to Geological Journal of China Universities ! Today is
Share:

J4 ›› 2011, Vol. 17 ›› Issue (4): 552-561.

Previous Articles     Next Articles

Fractal Analysis of Spatial Distribution of Faults around West Lake and
its Influence on the Distribution of Karst Collapse

SHEN Chao, PAN Mao, ZHAO Zeng-yu, LIANG He   

  1. 1. Key Laboratory of Orogenic Belt and Crustal Evolution, Education Ministry, Peking University, Beijing 100871, China;
    2. School of Earth and Space Sciences, Peking University, Beijing 100871, China;
    3. Zhejiang Institute of Geological Survey, Hangzhou 311203, China
  • Received:2011-09-14 Revised:2011-11-22 Online:2011-12-20 Published:2011-12-20

Abstract:

In this paper, we studied fractal characteristics of the spatial distribution of faults around West Lake with the gridcoverage
method based on Fractal theory, and then we analyzed the karst collapse susceptibility in this area. First, we outlined
briefly the geological background, the analytical methods, and calculated the fractal dimensions of both the NE-trending faults
and NW-trending faults. The results show that the fractal dimension can reflect the spatial characteristics of the fault distribution;
Second, by the study of the karst collapse of the zone, we discussed the relationship between the fractal dimensions and the
distribution of karst collapse. The results show that the NE-trending faults and NW-trending faults complement each other
in spatial distribution, and the distribution of karst collapse positively correlated with the fractal dimensions. In addition, we
quantitatively analyzed how faults control the distribution of karst collapse, which is vital for local engineering construction.

Key words: fractal dimension;West Lake;grid-coverage method;karst collapse

CLC Number: