Risk Assessment of EPB Shield Construction Based on the Nonlinear FAHP Method

Table 4

Value standard of the index prominent influence degree coefficient.

Scale	Definition
1.5	The index factors almost have no prominent influence
2.5	Index factors have a slightly prominent impact
3.5	Index factors have a significant impact
4.5	Index factors have a strong prominent impact
5.5	Index factors have extremely prominent influence
2.0, 3.0, 4.0, 5.0	The median value of adjacent scales represents the scale between two adjacent scales