A New Bayesian Network Model for the Risk Assessment of Water Inrush in Karst Tunnels

Table 6

Risk classification of the attitude of rock.

Risk classification	Attitude of rocks (°)	Definition
I	25~65	Strong water conductivity
II	10~25/65~80	Moderate water conductivity
III	80~90	Weak water conductivity
IV	0~10	Terrible water conductivity