Research Article
Classification Method and Application of Rock Fracture Ability by Supercritical CO2 Blasting
Table 8
Calculation method about digital characteristics of the cloud.
| | Fracture ability grade | Range of evaluation indicators | Expectation Ex | Entropy En | Hyperentropy He |
| | Grade I | (0, a) | Ex1 = (0 + a)/2 | En1 = (a − 0)/6 | 0.01 | | Grade II | (a, b) | Ex2 = (a + b)/2 | En2 = (b − a)/6 | 0.01 | | Grade III | (b, c) | Ex3 = (b + c)/2 | En3 = (c − b)/6 | 0.01 | | Grade IV | (c, d) | Ex4 = (c + d)/2 | En4 = (d − c)/6 | 0.01 | | Grade V | (d, +∞) | Ex5 = d | En5 = En4 | 0.01 |
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