Research Article
Study on Underground Utility Tunnel Fire Characteristics under Sealing and Ventilation Conditions
Table 2
Fire scenarios with heat release rate and maximum ceiling temperature.
| Fire scenario (FS) | Fire sealing door | Ventilation mode | Heat release rate (MW) | Maximum temperature (K) |
| FS1-3 | Closed | NN, NM, MM | 8, 9, 13 | 676, 575, 474 | FS4-6 | Opened | NN, NM, MM | 13, 13, 17 | 637, 517, 611 |
|
|