Research Article
Case Study on the Mechanism of Influence of Stoppage on Ground Pressure under Different Rates of Advance
Table 1
Rock mechanics parameters.
| | Serial number | Rock properties | Thickness (m) | Shear modulus (GPa) | Bulk modulus (GPa) | Density(g/cm3) | Cohesion (MPa) | Internal friction angle (°) | Tensile strength (MPa) |
| | 1 | Medium sandstone | 28 | 6.23 | 5.07 | 2450 | 6.25 | 39 | 1.20 | | 2 | Siltstone | 11.8 | 7.13 | 5.13 | 2350 | 4.24 | 37 | 1.12 | | 3 | Fine sandstone | 8.7 | 5.78 | 4.70 | 2320 | 4.05 | 35 | 1.10 | | 4 | Coal | 2.1 | 2.81 | 1.68 | 1347 | 0.64 | 32 | 0.32 | | 5 | Mudstone | 2.8 | 4.87 | 3.06 | 2100 | 1.32 | 34 | 0.66 |
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