Table 1 Rock mass model parameters.

From: Evaluation of the impact of blast damage on tunnel surrounding rock induced by C-type cumulative tube cone angle

Materials

Density ρ (g/cm3)

Poisson ratio

Shear modulus G (GPa)

Compressive strength fc (MPa)

Tensile strength T (MPa)

III-level

2.7

0.25

28

154

12.2

IV-level

2.6

0.26

24.17

119

8.2

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