Research Article
Selection of Compatible Coal Seam for Methane Drainage Operation Based on Uncertain Geological Conditions: A Hybrid Fuzzy Approach
Table 5
The importance degree (weight) of the geological criteria affecting MDA of coal seams.
| Criteria | Symbol | Degree of importance () |
| Depth of seam | C1 | 0.1208 | Thickness of seam | C2 | 0.0815 | Cleats | C3 | 0.1682 | Uniformity of seam | C4 | 0.1138 | Gas content | C5 | 0.1584 | Roof quality | C6 | 0.0888 | Water condition | C7 | 0.1364 | Permeability | C8 | 0.1320 |
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