Research Article
A Prediction Model for Top-Coal Drawing Capability in Steep Seams Based on PCA–GRNN
Table 1
Data about influencing factors of top-coal drawing capability.
| | No. | | | | | | | | | | Actual level |
| | 1 | 4 | 4 | 1 | 28 | 280 | 75 | 4.5 | 1.2 | 0 | A | | 2 | 3 | 3 | 1 | 36 | 385 | 58 | 2.3 | 1.3 | 0 | A | | 3 | 2 | 2 | 2 | 36 | 425 | 54 | 2.1 | 1.4 | 0 | A | | 4 | 3 | 2 | 1 | 39 | 340 | 59 | 2.0 | 1.1 | 0 | A | | 5 | 4 | 2 | 1 | 31 | 310 | 70 | 6.5 | 1.1 | 0 | A | | 6 | 3 | 1 | 1 | 4 | 340 | 67 | 4.5 | 1.8 | 0.1 | B | | 7 | 2 | 2 | 2 | 38 | 627 | 78 | 7.9 | 1.8 | 0.05 | B | | 8 | 2 | 1 | 1 | 38 | 649 | 76 | 5.8 | 1.8 | 0 | B | | 9 | 2 | 2 | 2 | 30 | 546 | 72 | 6.4 | 1.9 | 0 | B | | 10 | 3 | 2 | 1 | 33 | 527 | 79 | 6.8 | 1.5 | 0 | B | | 11 | 3 | 2 | 1 | 3 | 280 | 65 | 3.5 | 1.7 | 0.08 | C | | 12 | 4 | 3 | 1 | 5 | 302 | 68 | 3.6 | 1.7 | 0.1 | C | | 13 | 3 | 3 | 2 | 5 | 322 | 63 | 3.2 | 1.8 | 0 | C | | 14 | 2 | 2 | 1 | 4 | 328 | 63 | 3.8 | 1.6 | 0 | C | | 15 | 4 | 4 | 1 | 12 | 320 | 68 | 2.5 | 1.5 | 0 | C | | 16 | 4 | 3 | 1 | 3 | 180 | 85 | 5.2 | 2.3 | 0.1 | D | | 17 | 4 | 4 | 2 | 4 | 200 | 89 | 4.9 | 2.0 | 0.15 | D | | 18 | 4 | 3 | 2 | 6 | 168 | 82 | 4.8 | 2.0 | 0.18 | D | | 19 | 3 | 3 | 2 | 5 | 170 | 83 | 5.0 | 2.0 | 0.23 | D | | 20 | 4 | 3 | 1 | 5 | 180 | 87 | 2.9 | 1.8 | 0.35 | D | | 21 | 3 | 2 | 2 | 36 | 405 | 60 | 2.4 | 1.3 | 0 | A | | 22 | 3 | 2 | 2 | 25 | 430 | 2 | 3.8 | 1.1 | 0 | A | | 23 | 2 | 2 | 1 | 24 | 352 | 54 | 2.2 | 1.2 | 0 | B | | 24 | 3 | 3 | 1 | 8 | 368 | 70 | 3.0 | 1.3 | 0 | B | | 25 | 3 | 3 | 2 | 10 | 340 | 54 | 2.0 | 1.3 | 0 | C |
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