Table 2 The size and spatial location of coal-rock particles.
From: Research on coal rock parameter calibration based on discrete element method
Name | Sphere number | Center coordinates X(mm) | Center coordinates Y(mm) | Center coordinates Z(mm) | Particle radius(mm) | Contact radius(mm) |
|---|---|---|---|---|---|---|
Shapes-ellipsoidal | 1 | 6.23 | 0.40 | 0 | 10 | 12 |
2 | 2.30 | 5.81 | 0 | 10 | 12 | |
3 |  − 4.81 | 3.99 | 0 | 10 | 12 | |
4 |  − 5.28 |  − 3.34 | 0 | 10 | 12 | |
5 | 1.54 | 6.05 | 0 | 10 | 12 | |
6 | 0 | 0 | 1.00 | 10 | 12 | |
7 | 0 | 0 |  − 1.00 | 10 | 12 | |
Near-spherical | 1 |  − 1.49 | 0 | 0 | 17 | 19 |
2 | 1.49 | 0.01 | 0.01 | 17 | 19 | |
Class block | 1 |  − 4.01 |  − 4.01 | 0 | 12 | 14 |
2 |  − 4.01 | 3.98 | 0 | 12 | 14 | |
3 | 4.05 |  − 3.99 | 0 | 12 | 14 | |
4 | 4.02 | 4.05 | 0 | 12 | 14 |
