Table 2 Geological condition and excavation mode along chainage.
From: A jamming risk warning model for TBM tunnelling based on Bayesian statistical methods
Chainage range | Length (m) | Ring number range | Strata type | Excavation mode |
|---|---|---|---|---|
8830.48 ~ 8615.55 | 214.93 | 1 ~ 120 | Sandy clay | EPB |
8615.55 ~ 8606.56 | 8.99 | 121 ~ 125 | Completely weathered granite | |
8606.56 ~ 8590 | 16.56 | 126 ~ 133 | Slightly weathered granite | |
8590 ~ 8575 | 15 | 134 ~ 142 | ||
8575 ~ 8564.1 | 10.9 | 143 ~ 148 | ||
8564.1 ~ 8520 | 44.1 | 149 ~ 173 | TBM | |
8520 ~ 8380 | 140 | 174 ~ 251 | ||
8389 ~ 8363.8 | 16.2 | 252 ~ 260 | Moderate and slightly weathered granite | |
8363.8 ~ 8355 | 8.8 | 261 ~ 265 | EPB | |
8355 ~ 8335 | 20 | 266 ~ 276 | Completely, strongly, moderate and slightly weathered granite | |
8335 ~ 8300 | 35 | 277 ~ 295 | Completely and strongly weathered granite | |
8300 ~ 8230 | 70 | 296 ~ 335 | Completely weathered granite | |
8230 ~ 8220 | 10 | 336 ~ 340 | Completely, strongly, moderate and slightly weathered granite | |
8220 ~ 8170 | 50 | 341 ~ 367 | Moderate and slightly weathered granite | |
8170 ~ 8093.55 | 76.45 | 368 ~ 410 | Strongly and moderate weathered granite | |
8093.55 ~ 8070.15 | 23.4 | 411 ~ 423 | Strongly, moderate and slightly weathered granite | |
8070.15 ~ 8040 | 30.15 | 424 ~ 440 | Strongly and moderate weathered granite | |
8040 ~ 8015 | 25 | 441 ~ 454 | Slightly weathered granite | |
8015 ~ 7990 | 25 | 455 ~ 468 | TBM | |
7990 ~ 7845 | 145 | 469 ~ 548 | ||
7845 ~ 7825 | 20 | 549 ~ 560 | ||
7825 ~ 7785 | 40 | 561 ~ 582 | ||
7785 ~ 7765 | 20 | 583 ~ 593 | ||
7765 ~ 7535 | 230 | 594 ~ 720 | ||
7535 ~ 7515 | 20 | 721 ~ 732 | ||
7515 ~ 7475 | 40 | 733 ~ 754 | ||
7475 ~ 7455 | 20 | 755 ~ 765 | ||
7455 ~ 7048.63 | 406.37 | 766 ~ 992 |
