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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