Study on the Influence of Magnification of Rock SEM on Fractal Dimension

DOI

10.2991/coal-18.2018.46How to use a DOI?

Keywords

SEM, fractal dimension, box-counting method, MATLAB, magnification

Abstract

Fractal dimension is widely used in the quantitative description of nonlinear systems and irregular properties. It is of great significance on the mechanism of rock mechanics. This can provide guidance for the management of goafs in rock mines. In this paper, firstly, multiple sets of rock fracture surface images with different magnifications are obtained through SEM experiment. Secondly, the optimal binarization thresholds of each group of images are solved by Otsu method, and the average value is used as the binarization threshold. Finally, the results of fractal dimension is implemented by box-counting method using MATLAB, and the fractal dimension of each group of images under the same threshold is obtained. The results of comparative analysis show that the increase of magnification makes the decrease of observation range. When the structural complexity of the rock surface decreasing, the fractal dimension is decreased. When the magnification is greater than 2500, the fractal dimension tends to be stable and can be used as a reference for rock fractal research.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Sen Li
AU  - Houli Fu
AU  - Zhe Qin
AU  - Lunan Sun
PY  - 2018/10
DA  - 2018/10
TI  - Study on the Influence of Magnification of Rock SEM on Fractal Dimension
BT  - Proceedings of the 9th China-Russia Symposium "Coal in the 21st Century: Mining, Intelligent Equipment and Environment Protection" (COAL 2018)
PB  - Atlantis Press
SP  - 252
EP  - 255
SN  - 2352-5401
UR  - https://doi.org/10.2991/coal-18.2018.46
DO  - 10.2991/coal-18.2018.46
ID  - Li2018/10
ER  -