Table 2 State variable weight vector.

Index	K₁^#	K₂^#	K₃^#	K₄^#	K₅^#	K₆^#
Earthquake	0.8	0.8	0.85	0.9	0.85	0.9
Debris flow	0.95	0.85	0.95	0.85	0.85	0.9
Extreme weather	0.55	0.6	0.8	0.9	0.9	0.8
Bad geological structure	0.45	0.45	0.25	0.35	0.8	0.4
Water burst	0.98	0.99	0.9767	0.9667	0.98	0.97
Formation condition	0.5	0.35	0.35	0.45	0.8	0.55
Tunnel instability	0.718	0.69	0.65	0.67	0.73	0.71
Underpass line	0.95	0.95	0.95	0.85	0.8	0.75
Geological exploration inaccuracy	0.93	0.91	0.94	0.87	0.92	0.84
Support structure problem	0.75	0.55	0.8	0.85	0.8	0.85
Backfill and grouting are not up to standard	0.85	0.9	0.8	0.85	0.85	0.9
TBM driving deviation	0.85	0.9	0.9	0.95	0.85	0.85
The cutter head system fault	0.65	0.85	0.9	0.9	0.75	0.8
Transmission system fault	0.85	0.85	0.9	0.95	0.8	0.9
Propulsion system fault	0.85	0.9	0.85	0.85	0.9	0.85
The grouting system fault	0.85	0.85	0.9	0.75	0.8	0.85
Improper maintenance of equipment	0.7	0.75	0.75	0.75	0.8	0.75
Hypoxia and poisoning	0.95	0.9	0.95	0.85	0.9	0.85
Equipment injury	0.9	0.95	0.9	0.95	0.9	0.95
Fire hazard	0.75	0.9	0.9	0.9	0.85	0.85
Management system is not perfect	0.8	0.75	0.75	0.85	0.8	0.8
Management mechanism problem	0.75	0.8	0.85	0.8	0.85	0.85
Organization and coordination problem	0.75	0.75	0.65	0.85	0.8	0.8

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