Construction Safety Risk Assessment of Large-Sized Deep Drainage Tunnel Projects

Table 5

Calculation results of point centrality of all secondary indicators.

Ranking	Index	Point centrality	Ranking	Index	Point centrality	Ranking	Index	Point centrality
1	E11	75	17	D22	15.5	33	C11	0
2	E24	68.5	18	C24	14	33	B12	0
3	B11	59.5	19	A14	11.5	33	D12	0
4	D24	57.5	20	E13	8	33	A24	0
5	D26	57	21	B14	6	33	D25	0
6	D16	52	22	D21	4	33	C12	0
7	A12	49.5	23	A23	3.5	33	E12	0
8	D15	42.5	23	B21	3.5	33	B23	0
9	A22	36.5	25	E14	3	33	E21	0
10	D23	36	25	A21	3	33	C22	0
11	E23	34	27	C14	1.5	33	C21	0
12	A11	30.5	27	B24	1.5	33	E22	0
13	D11	28	27	A13	1.5	33	C23	0
14	B22	26	30	D14	1	33	E25	0
15	D13	23	30	C13	1	—	—	—
16	B12	22.5	30	E15	1	—	—	—