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

Table 1

Risk rating factors.

Factor category	Factor selection
Objective factors	Section size, construction method, tunnel depth, surrounding rock level, groundwater, mud inrush
Subjective factors	Prereinforcement effect, support timing, support strength, construction quality, construction experience, construction management
Monitoring factors	Inner-tunnel observation, arch crown convergence, side wall displacement