Research Article

Evaluation on the Stability of Vertical Mine Shafts below Thick Loose Strata Based on the Comprehensive Weight Method and a Fuzzy Matter-Element Analysis Model

Table 2

Definition of the degree of importance of a factor.

Comparison of the importance of two factorsCorresponding quantized value

Two factors are of equal importance1
One factor is more important than the other3
The importance of one factor is greater than that of the other5
The importance of one factor is very large compared to the other factor7
The importance of one factor is greater than the other factor9
An intermediate value of the above comparison2, 4, 6, 8