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Advances in Materials Science and Engineering
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2021
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Article
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Tab 2
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Research Article
Research on Rapid Evaluation of Rock Mass Quality Based on Ultrasonic Borehole Imaging Technology and Fractal Method
Table 2
Rock mass quality classification according to the fractal box dimension D of the hole wall image
D
<2.0526
2.0526∼2.0723
2.0723∼2.105
2.105∼2.1378
>2.1378
Rock quality
Very good
Good
General
Poor
Very poor