Parameter

Min

Max

Ave

GSI

40

50

45

Intact uniaxial compressive strength (Mpa)

50

100

75

Mi

11

23

17

Material constants

m_b

0.154

1.754

0.828

S

0.0001

0.0014

0.0003

A

0.478

0.612

0.508

Cohesion (Mpa)

0.210

0.501

0.442

Friction angle (deg)

62.87

90.63

47.85

Rock mass parameter (Mpa)

Tensile strength

−0.019

−0.08

−0.031

Uniaxial compressive strength

0.096

2.68

1.307

Global strength

6.98

10.67

8.816

Modulus of deformation

600.75

1000.5

854.68