A Dynamic Risk Assessment Method for Deep-Buried Tunnels Based on a Bayesian Network

Table 7

Rating changes in the three types of factor ratings with different dynamic risk ratings.

Dynamic risk rating	Ratings of the three types of factors	Rating probability of objective factors (%)	Difference (%)	Rating probability of subjective factors (%)	Difference (%)	Rating probability of monitoring factors (%)	Difference (%)
I	I	87.5	+6.2	84.5	+6.3	78.3	+7.1
	II	9.46	-2.74	10.8	-3	17.0	-4
	III	3.02	-3.41	4.67	-3.26	4.75	-3.01
II	I	59.1	-22.2	54.2	-24	43.4	-27.8
	II	23.8	+11.6	26.1	+12.3	37.9	+16.9
	III	17.1	+10.67	19.7	+11.77	18.6	+10.84
III	I	48.9	-32.4	48.1	-30.1	38.7	-32.5
	II	23.5	+11.3	26.8	+13	37.8	+16.8
	III	27.5	+21.07	25.1	+17.17	23.5	+15.74