Rock name | Thickness (m) | Unit weight (kg/m3) | Bulk modulus (MPa) | Shear modulus (MPa) | Tensile strength (MPa) | Cohesiveness (MPa) | Internal friction angle (˚) |
Siltstone | 7.0 | 2530 | 5690 | 3290 | 5.5 | 8.3 | 41.5 |
Fine-Sandstone | 9.0 | 2630 | 3600 | 3600 | 6.8 | 6.3 | 36 |
Medium grained sandstone | 4.0 | 2630 | 3860 | 3500 | 6.7 | 6.2 | 38.5 |
Sandy mudstone | 4.0 | 2400 | 4167 | 2869 | 1.8 | 3.2 | 37 |
Siltstone | 8.0 | 2530 | 5690 | 3290 | 5.5 | 8.3 | 41.5 |
Sandy mudstone | 2.0 | 2400 | 4167 | 2869 | 1.8 | 3.2 | 37 |
Coal seam (No. 5) | 3.25 | 1340 | 1670 | 1480 | 3.8 | 2.75 | 36.5 |
Quartz sandstone | 1.44 | 2530 | 7120 | 8350 | 7.9 | 9.3 | 26 |
Siltstone | 5.15 | 2530 | 5690 | 3290 | 5.5 | 8.3 | 41.5 |
Quartz sandstone | 8.51 | 2530 | 7120 | 8350 | 7.9 | 9.3 | 26 |
Siltstone | 2.9 | 2530 | 5690 | 3290 | 5.5 | 8.3 | 41.5 |
K2 limestone | 3.22 | 2090 | 2260 | 1110 | 1.71 | 3.65 | 37 |