Research Article
A Study of Fractal Deep-Hole Blasting and Its Induced Stress Behavior of Hard Roof Strata in Bayangaole Coal Mine, China
Table 5
Medium-grain sandstone blasting parameters.
| Mass density (g·cm−3) | Elastic modulus (GPa) | Maximum compressive strength (GPa) | Maximum tensile pressure (MPa) | Poisson’s ratio | Accumulated plastic strain before fracture (%) |
| 2.131 | 23 | 43.94 | 2.8515 | 0.2225 | 0.7 |
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