Research Article
Experimental Study on Reasonable Spacing after Carbon Dioxide Presplitting in Low-Permeability Coal Seam
Table 3
Variance analysis of time factor experimental results.
| | Factors | Sum of deviation squares (SSi) | Freedom (df) | Mean square deviation (MS) | FA | F0.05 (1, 14) | Significance |
| | Drilling field (A) | 6.9706 | 15 | 0.41003 | 46.7541 | 2.35 | Remarkable | | Error (E) | 0.1316 | 16 | 0.00877 | — | — | — | | Sum (T) | 7.1022 | 31 | — | — | — | — |
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