Table 2 Results of fitting parameters for the creep principal structure model.

From: Experimental and constitutive model study on the mechanical properties of a structural plane of a rock mass under dynamic disturbance

Upper limit stress /MPa

\(k_{1}\)/ GPa

\(\eta_{1}\)/(GPA·h)

\(k_{2}\)/GPa

\(\eta_{2}\)/(GPa·h)

\(\eta_{n}\)/(GPa·h)

a

b

R2

30

14.1674

20,090,351

11.3524

315.5032

   

0.9999

36

12.0892

493.34

163.3885

238.325

4.8763

147.0997

33.1388

0.9998

40

13.6236

497.34

136.3434

106.3419

1.2754

188.9325

46.0481

0.9995

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