Table 1 The parameters of rock mass of LWF 7125.
Lithology | Density (kg∙m-3) | Elastic modulus (GPa) | Friction (°) | Cohesion (MPa) | Tensile strength (MPa) |
|---|---|---|---|---|---|
Gritstone | 2650 | 17.43 | 32 | 3.16 | 2.42 |
Siltstone | 2602 | 14.59 | 35 | 3.07 | 2.17 |
3# coal seam | 1400 | 3.79 | 18 | 1.49 | 1.21 |
Conglomerate | 2660 | 18.08 | 34 | 3.5 | 3.13 |
5# coal seam | 1400 | 3.80 | 18 | 1.49 | 1.21 |
Carbonaceous-mudstone | 2200 | 14.77 | 29 | 2.94 | 2.22 |
Kaolinite rock | 2570 | 17.00 | 38 | 5.18 | 2.78 |
Medium-sandstone | 2557 | 12.69 | 38 | 6.26 | 3.63 |
