Table 3 Shear stiffnesses of ACC-reinforced jointed rock masses (ACC loaded to failure).
Bolt type | Normal stress (MPa) | Average shear stiffness (kN/mm) |
|---|---|---|
Q235-ACC | 2 | 4.64 |
Q235-ACC | 4 | 6.71 |
Q235-ACC | 6 | 8.19 |
Q235-ACC | 10 | 11.7 |
Q345-ACC | 2 | 4.97 |
Q345-ACC | 4 | 8.4 |
Q345-ACC | 6 | 9.38 |
Q345-ACC | 10 | 13.84 |