Research Article
Rock Dynamic Fracture Characteristics Based on NSCB Impact Method
Table 1
Physical and mechanical parameters of typical rocks.
| | | Density (kg/m3) | Elastic modulus (GPa) | Poisson’s ratio | Uniaxial compressive strength (MPa) | Place of Origin |
| | Sandstone | 2150 | 4.6 | 0.24 | 41 | Immediate roof of concentrated track tunnel, the Second Mining Area, Shuguang Mine of Shanxi Coking Coal |
| | Mudstone | 2480 | 6.5 | 0.25 | 28 | Immediate floor of concentrated track tunnel, the Second Mining Area, Shuguang Mine of Shanxi Coking Coal |
| | Granite | 2730 | 18.4 | 0.2 | 103 | Tongtang Town, Tong’an District, Xiamen |
| | Coal | 1475 | 7.9 | 0.23 | 18 | The Second Mining Area, Shuguang Mine of Shanxi Coking Coal |
| | PMMA | 1127 | 6.1 | 0.28 | | Beijing Xuanguang Acrylic Factory |
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