Parameter

Min

Max

Ave

GSI

30

40

35

Intact uniaxial compressive strength (MPa)

30

80

55

Mi

9

17

13

Material constants

m_b

0.457

0.754

0.366

S

0.0001

0.0009

0.0001

A

0.489

0.654

0.516

Cohesion (Mpa)

0.190

0.451

0.270

Friction angle (Deg)

19.05

50.63

38.41

Rock mass parameter

(MPa)

Tensile strength

−0.021

−0.09

−0.012

Uniaxial compressive strength

0.023

1.98

0.426

Global strength

1.65

9.76

4.075

Modulus of deformation

600.75

1000.5

347.07