Table 2 Mechanical parameters of the cohesive zone model.

From: Numerical simulation of fracture patterns in roof strata with different thicknesses

h/(mm)

\({K}_{nn}\)/(GPa)

\({K}_{ss}\)/(GPa)

\({K}_{tt}\)/(GPa)

\({\sigma}_{nn}\)/(MPa)

\({\sigma}_{ss}\)/(MPa)

\({\sigma}_{tt}\)/(MPa)

\({G}_n^{C}\)

\({G}_{s}^{C}\)

\({G}_{t}^{C}\)

\(\eta\)/(1)

20

12.0

2.4

2.4

4.00

9.00

9.00

0.06

0.20

0.20

2.0

45

12.0

2.4

2.4

4.00

8.00

8.00

0.06

0.20

0.20

2.0

65

12.0

2.4

2.4

2.50

6.72

6.72

0.05

0.30

0.30

2.0