Research Article
Experimental Analyses of the Major Parameters Affecting the Intensity of Outbursts of Coal and Gas
Table 4
Orthogonal design and result.
| Factors levels | Results of experiments | Test number | Moisture | Geostress | Porosity | Gas pressure | Relative intensity (%) |
| 1 | 1 | 1 | 1 | 1 | 0 | 2 | 1 | 2 | 2 | 2 | 24.1 | 3 | 1 | 3 | 3 | 3 | 39.2 | 4 | 2 | 1 | 2 | 3 | 17.2 | 5 | 2 | 2 | 3 | 1 | 10.9 | 6 | 2 | 3 | 1 | 2 | 23.57 | 7 | 3 | 1 | 3 | 2 | 5.87 | 8 | 3 | 2 | 1 | 3 | 18.5 | 9 | 3 | 3 | 2 | 1 | 0 |
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