Research Article
Numerical Simulation of Fragment Separation during Rock Cutting Using a 3D Dynamic Finite Element Analysis Code
Table 6
The results of the mean cutting forces and element separation at a cutting speed of 1 m/s.
| | Rock name | Mean cutting force (kN) | Number of separate elements | Specific energy (kWh/m3) | | Depth of cut (mm) | Depth of cut (mm) | Depth of cut (mm) | | 3 | 6 | 9 | 12 | 3 | 6 | 9 | 12 | 3 | 6 | 9 | 12 |
| | Sandstone-1 | 1.2 | 2.3 | 3.8 | 5.6 | 5,002 | 11,616 | 20,697 | 32,908 | 5.33 | 4.4 | 4.08 | 3.78 | | Sandstone-2 | 1.0 | 1.8 | 2.5 | 3.6 | 4,831 | 10,547 | 15,973 | 24,342 | 4.60 | 3.79 | 3.48 | 3.29 | | Sandstone-3 | 0.9 | 1.6 | 2.6 | 3.8 | 4,578 | 10,589 | 17,676 | 27,963 | 4.37 | 3.36 | 3.27 | 3.02 | | Limestone | 1.2 | 2.1 | 3.6 | 5.2 | 5,431 | 11,873 | 21,740 | 33,849 | 4.91 | 3.93 | 3.68 | 3.41 |
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