Table 1 The geotechnical properties of the intact rock samples (KV5)
No | PI (MPa | σc (MPa) Sidewalls | σc (MPa) Pillars | Vs (km/s) | RN |
|---|---|---|---|---|---|
1 | 0.4 | 7.1 | 0.9 | 0.7 | 18 |
2 | 0.5 | 6.9 | 0.8 | 0.5 | 19 |
3 | 0.4 | 7.5 | 0.95 | 0.8 | 20 |
4 | 0.3 | 7.0 | 0.9 | 0.9 | 18 |
5 | 0.5 | 6.9 | 0.8 | 0.7 | 17 |
6 | 0.3 | 6.6 | 0.7 | 0.6 | 18 |
7 | 0.4 | 7.0 | 1.1 | 0.7 | 19 |