Research Article
Mechanical Model of Underground Shaft Coal Pocket and Deformation of Silo Wall in Coal Mines
Table 1
Physical and mechanical parameters of rock mass used in numerical simulation.
| Rock type | Density (kg·m−3) | Internal friction angle (°) | Tensile strength (MPa) | Elastic modulus (GPa) | Cohesion (MPa) | Poisson ratio |
| Coal | 1430 | 39.5 | 0.2 | 0.10 | 0.42 | 0.32 | Concrete silo wall C30 | 2385 | 54.9 | 1.0 | 30 | 3.18 | 0.2 |
|
|