Research Article
A Supporting Design Method When Longwall FaceStrides across and Passes through a Roadway
Table 7
Parameters for the concrete and the wood cribs.
| | Material | Constitutive model | Density (kg/m3) | Young’s modulus (GPa) | Poisson’s ratio | Cohesive (MPa) | Friction angle (deg.) | Tension (MPa) |
| | Concrete | Mohr-Coulomb | 2400 | 30 | 0.2 | 3.18 | 55 | 1.43 | | Wood cribs | Elastic | 364 | 4.3 | 0.38 | — | — | — |
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