Risk Assessment of Deep Foundation Pit Construction Based on Analytic Hierarchy Process and Fuzzy Mathematics

Table 2

Indexes of the consequence severity.

Assignment	Severe injury (F) death (SI)/person	Economic losses/10,000 RMB	Construction delays/months	Environmental impacts	Social impacts
5	SI > 10	>1000	>9	Very large	Terrible
4	9 ≥ SI ≥ 3 or F ≥ 10	(1000, 500]	(9, 6]	Big	Serious
3	2 ≥ SI ≥ 1 or 9 ≥ F ≥ 2	(500, 100]	(6, 3]	Big	More serious
2	F = 1 or 10 ≥ minor injuries ≥ 2	(100, 50]	(3, 1]	Smaller	Need to consider
1	Minor injuries = 1	<50	<1	Very small	Ignorable