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

Table 8

Total ranking of risk factors.

Specific risk factor	Total weight
Safety awareness	0.1232
Safety monitoring system	0.0984
Roof weakness	0.0841
Ideological and political qualities	0.0616
Ventilation system	0.0606
Fire-fighting system	0.0553
Rock bolt quality	0.0552
Thickness of immediate roof	0.0511
Stratum combination	0.0472
Rock mass strength	0.0435
Gas emission	0.0368
Coal outburst characteristics	0.0368
Physical condition and professional competence	0.0308
Personnel arrangement	0.0308
Emergency drilling	0.0292
Tunnel support factor	0.0292
Roof management system	0.0274
Development degree of coal seam cracks	0.0264
Safety education	0.0223
Deep crustal stress concentration	0.0167
Stratum gas content	0.0144
Safety rules and regulations	0.0101
Geological structure	0.0085