Table 4 Orthogonal experimental results.
From: Supporting optimization of thick seam roadway with top coal based on orthogonal matrix analysis
Experiment number | Factor | Evaluation indicators | ||||
|---|---|---|---|---|---|---|
Anchor cable preload (A) | Anchor cable length (B) | Anchor cable spacing (C) | Roof deformation/mm | Two sides deformation/mm | Plastic zone volume/m3 | |
1 | 1 | 1 | 1 | 50.11 | 38.13 | 300.76 |
2 | 1 | 2 | 2 | 56.17 | 47.24 | 295.86 |
3 | 1 | 3 | 3 | 51.18 | 47.64 | 295.86 |
4 | 2 | 1 | 2 | 55.85 | 46.66 | 296.54 |
5 | 2 | 2 | 3 | 50.26 | 46.8 | 278.46 |
6 | 2 | 3 | 1 | 49.25 | 28.48 | 264.86 |
7 | 3 | 1 | 3 | 50.58 | 46.24 | 281.72 |
8 | 3 | 2 | 1 | 49.62 | 36.04 | 320.35 |
9 | 3 | 3 | 2 | 55.54 | 46.25 | 289.65 |
