Evaluating Construction Risks of Modified Shield Machine Applicable to Soft Soils Based on Fuzzy Comprehensive Evaluation Method

Table 1

Fuzzy scale table.

Scale	Meaning
0.1	Risk i is absolutely not as important as risk j
0.3	Risk i is obviously not as important as risk j
0.5	Risk i has the same importance as risk j
0.7	Risk i is obviously more important than risk j
0.9	Risk i is absolutely more important than risk j

where 0.2, 0.4, 0.6, and 0.8 are the median of adjacent judgment intervals.