Dynamic Evaluation Method of the EW-AHP Attribute Identification Model for the Tunnel Gushing Water Disaster under Interval Conditions and Applications

Table 1

Grading standards for the evaluation index.

Evaluation index Ii	Evaluation index value ti	Order of evaluation
		R1	R2	…	Rk
Ii1	ti1	a10 ∼ a11	a11 ∼ a12	…	a1 (k − 1) ∼a1k
Ii2	ti2	a20 ∼ a21	a21 ∼ a22	…	a2 (k − 1) ∼ a2k
Iij	tij	aj0 ∼ aj1	aj1 ∼ aj2	…	aj (k − 1) ∼ ajk
Iim	tim	am0 ∼ am1	am1 ∼ am2	…	am (k − 1) ∼ amk