Dynamic Risk Assessment of Karst Tunnel Collapse Based on Fuzzy-AHP: A Case Study of the LianHuaShan Tunnel, China

Table 1

Saaty relative scaling method.

Calibration	Meaning
1	The former has the same importance as the latter
3	The former is slightly more important than the latter
5	The former is significantly more important than the latter
7	The former is intensively more important than the latter
9	The former is extremely more important than the latter
2, 4, 6, 8	Represents the median value of the adjacent judgment
aji	If the ratio of element i and element j is aij, then the ratio of element j to element I is aji = 1/aij

Note. Table 1 is reproduced from Wang and Chen [20].