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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