Study on the Application of the Kent Index Method on the Risk Assessment of Disastrous Accidents in Subway Engineering

Table 2

Indicators of economic losses.

Disaster grade	Disastrous	Very serious	Serious	Moderate	Slight
Economic loss (¥ × million)	>10	3–10	1–3	0.3–1	<0.3
Score	20	16	12	8	4