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

Table 9

Risk classification of excavation disturbance.

Risk classification	Definition
I	Blasting excavation, maximum disturbance degree, and range
II	Advance exploratory drilling, general disturbance degree, and range
III	No blasting, minimum disturbance degree, and range
IV	No drilling, no disturbance