Table 1 Numerical simulation of rock mechanics parameters.
From: Investigation of the mechanism and application of pressure relief roadway in preventing rock burst
Rock layer | Thickness, m | Friction angle,° | Tensile strength, MPa | Density, kg/m3 | Shear modulus, GPa | Bulk modulus, GPa | Cohesion, MPa |
|---|---|---|---|---|---|---|---|
Siltstone | 13 | 32.0 | 5.5 | 2790 | 2.5 | 4.3 | 5.8 |
Coal | 5.9 | 22.0 | 2.7 | 1420 | 1.3 | 3.7 | 3.2 |
Sandy mudstone | 2.0 | 20.5 | 5.0 | 2760 | 2.7 | 4.2 | 5.1 |
Sandy mudstone | 8.3 | 32.5 | 7.8 | 2770 | 2.1 | 4.8 | 10.3 |
Sandy mudstone | 5.3 | 30.0 | 5.2 | 2630 | 2.5 | 4.3 | 7.1 |
Sandy mudstone | 11.4 | 22.0 | 4.6 | 2740 | 2.2 | 4.7 | 8.6 |
Fine-grained sandstone | 14.8 | 27.7 | 6.0 | 2770 | 2.7 | 4.6 | 7.2 |
Medium-grained sandstone | 7.9 | 33.0 | 5.2 | 2690 | 2.3 | 4.1 | 6.5 |
