Research on Coupling Degree Model of Safety Risk System for Tunnel Construction in Subway Shield Zone

Table 3

Comparison of advantages and disadvantages of each model.

Model name	Advantage	Disadvantage	Application field
The SHEL model	Taking human as the leading factor, the factors affecting safety management are summarized systematically	Lack of research on risk coupling mechanism and quantitative calculation	Aviation safety
The SD Model	The mechanism of risk coupling is deeply studied	Lack of quantitative calculation	Risk management
Interpretative structural model	Quantitative analysis of interactions in complex systems	Depending on the subjective judgment of the decision maker	Business management
The N-K model	Quantitative analysis of the interaction effects of different components	Lack of complete historical data	Traffic safety management