Table 5 Mean and range results of each evaluation indicators.
From: Supporting optimization of thick seam roadway with top coal based on orthogonal matrix analysis
Evaluation indicators | Range | Anchor cable preload (A) | Anchor cable length (B) | Anchor cable spacing (C) |
|---|---|---|---|---|
Roof | Mean1 | 52.487 | 52.180 | 49.660 |
Mean2 | 51.787 | 52.017 | 55.853 | |
Mean3 | 51.913 | 51.990 | 50.673 | |
Range | 0.700 | 0.190 | 6.193 | |
Two sides | Mean1 | 44.337 | 43.677 | 34.217 |
Mean2 | 40.647 | 43.360 | 46.717 | |
Mean3 | 42.843 | 40.790 | 46.893 | |
Range | 3.690 | 2.887 | 12.676 | |
Plastic zone | Mean1 | 297.493 | 293.007 | 295.323 |
Mean2 | 279.953 | 298.223 | 294.017 | |
Mean3 | 297.240 | 283.457 | 285.347 | |
Range | 17.540 | 14.766 | 9.976 |
