Table 2 Properties of steel and coal rock materials.
Material | Density (kg/m3) | Elastic modulus (N/m2) | Poisson ratio |
|---|---|---|---|
Steel | 7850 | \(2.06 \times 10^{11}\) | 0.3 |
Coal | 1700 | \(3.5 \times 10^{9}\) | 0.28 |
Gangue | 2800 | \(3.4 \times 10^{10}\) | 0.3 |
Material | Density (kg/m3) | Elastic modulus (N/m2) | Poisson ratio |
|---|---|---|---|
Steel | 7850 | \(2.06 \times 10^{11}\) | 0.3 |
Coal | 1700 | \(3.5 \times 10^{9}\) | 0.28 |
Gangue | 2800 | \(3.4 \times 10^{10}\) | 0.3 |
