Research Article
Study on Creep Characteristics and Constitutive Relation of Fractured Rock Mass
Table 1
Testing schemes of grading unloading pressure in the triaxial creep test.
| Number | Fracture characteristics | σ3 (MPa) | σ3 (MPa) | Level 1 | Level 2 | Level 3 | Level 4 | Level 5 |
| A00 | Complete coal sample | 45 | 10 | 8 | 6 | 4 | 2 | A30 | 30° angle | 40 | 10 | 8 | 6 | 4 | 2 | A45 | 45° angle | 35 | 10 | 8 | 6 | 4 | 2 | A60 | 60° angle | 33 | 10 | 8 | 6 | 4 | 2 |
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