Research Article
Discrete Element Simulation of Roadway Stability in an Efflorescent Oxidation Zone
Table 3
Physical and mechanical parameters of rock strata.
| | Lithologic unit | Elastic modulus, Er (GPa) | Poisson’s ratio, ν | Density (kg/m3) | Friction angle, Φ (°) | Cohesion, C (MPa) | Compressive strength, σc (MPa) |
| | Mudstone #1 | 4.6 | 0.12 | 2370 | 39 | 5.4 | 15.7 | | Gritstone #1 | 10.0 | 0.25 | 2652 | 45 | 7.4 | 38.1 | | Mudstone #2 | 4.6 | 0.26 | 2346 | 38 | 4.7 | 19.1 | | Number 9 coal | 3.2 | 0.25 | 1498 | 35 | 2.7 | 11.7 | | Mudstone #3 | 4.6 | 0.26 | 2346 | 38 | 4.7 | 19.1 | | Medium-fine sandstone | 13.0 | 0.21 | 2641 | 42 | 9.3 | 36.3 | | Gritstone #2 | 9.0 | 0.29 | 2450 | 46 | 13.4 | 36.6 | | Mudstone #4 | 4.6 | 0.26 | 2332 | 35 | 4.7 | 17.4 | | Number 11 coal | 3.2 | 0.25 | 1498 | 36 | 2.7 | 11.7 |
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