Research Article
Optimal Allocation of Tunnel Safety Provisions Based on a Quantitative Risk Assessment Model
Table 2
The annual worth of the candidate tunnel safety provisions.
| | Tunnel safety provisions | Types | Annual worth (million SD) |
| | Tunnel ventilation system | Longitudinal | 10.24 | | Transverse | 16.904 |
| | Fire detection system | Heat | 0.8552 | | Smoke | 1.6104 | | AID | 0.8552 |
| | Fire verification system | CCTV | 5.12 | | Emergency telephone | 3.876 |
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