Research on Rapid Evaluation of Rock Mass Quality Based on Ultrasonic Borehole Imaging Technology and Fractal Method

Figure 4

Sample image and its fractal box dimension Db value. (a) 2.0469. (b) 2.0382. (c) 2.0917. (d) 2.0379. (e) 2.0620. (f) 2.1073. (g) 2.0773. (h) 2.0960. (i) 2.1700. (j) 2.1599. (k) 2.0767. (l) 2.0747. (m) 2.0649. (n) 2.0995. (o) 2.0802. (p) 2.0463.

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