Research Article
Experimental and Numerical Simulation of Coal Rock Impact Energy Index Based on Peridynamics
Table 1
Physical parameters of different types of specimens.
| Specimen type and number | Coarse sandstone, CS | Fine sandstone, XS | Mudstone, NY | Top coal seam, 1M | Bottom coal seam, 4M |
| Density | 273.9 | 277.8 | 281.4 | 175.7 | 22.46 | Modulus of elasticity (×105) (MPa) | 5.2 | 5.2 | 3.5 | 1.2 | 1.2 | Poisson’s ratio | 0.249 | 0.25 | 0.33 | 0.3 | 0.3 |
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