Parameter

Min

Max

Ave

GSI

35

45

40

Intact uniaxial compressive strength (Mpa)

10

50

30

Mi

3

9

6

Material constants

m_b

0.0235

0.923

0.083

s

2.65

6.73

4.54

A

0.515

0.502

0.511

Cohesion (Mpa)

0.089

0.431

0.115

Friction angle (Deg)

12.76

62.76

23.81

Rock mass

parameter (MPa)

Tensile strength

−0.010

−0.05

−0.016

Uniaxial compressive strength

0.09

0.98

0.180

Global strength

0.9

2.1

1.070

Modulus of deformation

180.97

560.98

212.93