Research Article
Field Detection and Numerical Simulation Study on Roof Asymmetric Fracture Mechanism of Large-Span Soft Rock Roadway with Discontinuity Surface
Table 1
Physical and mechanics parameters for the simulated model.
| | Lithology | Matrix properties | Contact properties | | Density (kg/m3) | (GPa) | (GPa/m) | (GPa/m) | Friction angle (°) | Cohesion (MPa) | Tensile strength (MPa) |
| | Region I | 2350 | 3.4 | 16.8 | 6.8 | 32 | 2.7 | 1.23 | | Region II | 2500 | 7.0 | 38.4 | 15.4 | 21 | 6.0 | 2.0 | | Coal | 1400 | 2.8 | 84 | 33.6 | 30 | 1.4 | 0.5 | | Mudstone | 2500 | 7.0 | 38.4 | 15.4 | 21 | 6.0 | 2.0 | | Claystone | 2200 | 6.0 | 160 | 64 | 9.5 | 20 | 2.5 |
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