Risk Evaluation Model of Highway Tunnel Portal Construction Based on BP Fuzzy Neural Network

Table 7

The total ranking of risk factors.

Risk factors	B1	B2	B3	B4	Total ranking
	0.5962	0.2616	0.0989	0.0434
C1	0.2569	0.1467	0.4307	0.2522	0.2451
C2	0.1450	0.0143	0.2591	0.0435	0.1177
C3	0.4337	0.0423	0.0255	0.0802	0.2756
C4	0.0148	0.0240	0.0141	0.0143	0.0171
C5	0.0250	0.0753	0.0764	0.1365	0.0481
C6	0.0444	0.4354	0.1500	0.0243	0.1563
C7	0.0802	0.2619	0.0441	0.4490	0.1402