Study on Mechanical Characteristics of Fully Grouted Rock Bolts for Underground Caverns under Seismic Loads

Table 3

Physical and mechanical parameters.

Rock 1

Rock 2

Rock 3

Rock 4

Mortar

Bolt

Interface

15 GPa

21.5 GPa

17.5 GPa

21.5 GPa

10 GPa

210 GPa

0.8 MPa

5 GPa/m

5 GPa/m

5 GPa/m

5 GPa/m

0.167

0.3

30°

0.26

0.24

0.25

0.24

8 mm

14 mm

1.3 MPa

1.6 MPa

1.3 MPa

1.6 MPa

300 MPa

47.7°

52.4°

47.7°

52.4°

Note. is the yield strength of the bolt.