Research Article
Study of Instability Mechanism and Roof Caving Mode of Cementing Filling Stope: The Case Study of a Nonferrous Metal Mine in China
Table 1
Mechanical parameters of the rock mass.
| | Rock type | Bulk density (kg/m³) | Compressive strength (MPa) | Tensile strength (MPa) | Elastic modulus (GPa) | Internal friction angle (°) |
| | Gneiss | 2700 | 17.2 | 1.7 | 37.2 | 27 | | Quaternary | 2000 | 1.7 | 0.31 | 8.2 | 21 | | Ore body | 2800 | 14.3 | 1.8 | 28.1 | 28 | | Filling body | 2200 | 6.5 | 0.8 | 9.2 | 23 |
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