Research Article
Stability Control Mechanism of High-Stress Roadway Surrounding Rock by Roof Fracturing and Rock Mass Filling
Table 1
The mechanical parameters of the intact rock mass.
| | Lithology | Density (kg/m3) | Compressive strength (MPa) | Elasticity modulus (GPa) | Poisson’s ration | Cohesion (MPa) | Friction (°) |
| | Fine sandstone | 2750 | 57.2 | 12.5 | 0.22 | 2.6 | 29 | | Mudstone | 1900 | 13.1 | 5.0 | 0.29 | 1.4 | 25 | | Sandy mudstone | 2450 | 27.8 | 7.1 | 0.26 | 1.8 | 27 | | Siltstone | 2680 | 47.6 | 9.8 | 0.24 | 2.3 | 31 | | Mudstone | 1900 | 13.1 | 5.0 | 0.29 | 1.4 | 25 | | Coal seam | 1600 | 9.8 | 1.5 | 0.32 | 0.8 | 22 | | Mudstone | 1900 | 13.1 | 5.0 | 0.29 | 1.4 | 25 | | Fine sandstone | 2750 | 57.2 | 12.5 | 0.22 | 2.6 | 29 | | Siltstone | 2680 | 47.6 | 9.8 | 0.24 | 2.3 | 31 |
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