Research Article

Stability Assessment of Deep Three-Soft Outburst Coal Seam Roof Based on Fuzzy Analytic Hierarchy Process

Table 10

Relationship between scores and safety grades.

GradeGrade IGrade IIGrade IIIGrade IVGrade V

DescriptionLittle influenceSmall influenceGeneral influenceLarge influenceSignificant influence
Score range>9080–9060–7940–59<40