Figures & data
Figure 1. Legacy Way tunnel alignment.
Figure 2. Tunnel boring machine- overall length.
Figure 3. TBM shield and face of the cutterhead.
Figure 4. Preassembly of the TBM.
Figure 5. Eastern portal TBM disassembly box – available access indicated by blue arrows (roof removed).
Figure 6. Components of hydraulic jacking System- Blue arrows indicating movement of different components.
Figure 7. Rolling and turning operations.
Figure 8. Actual TBM disassembly programme (Refer to Section 7: Stages of the TBM disassembly for information about the backfilling operations).
Figure 9. Operations inside jacking system envelope.
Figure 10. TBM disassembly stages – roof removed.
Figure 11. Jacking system layout for Joyce shield.
Figure 12. Turning of the main drive.
Figure 13. Rolling of the Gripper shield side segment.
Table 1. Crane speed comparison showing maximum achievable speeds.
Figure 14. Jacking system layout for Joyce gantry.
Figure 15. Joyce gantry component being disassembled.
Figure 16. Jacking system layout for Annabell gantry.
Figure 17. Annabell gantry component being disassembled
Figure 18. Cutterhead turning with Jacking System.
Figure 19. Stages of cutterhead segments removal – arrow indicating the orientation; Yellow members indicating temporary steel stands.
Figure 20. Cutterhead segment 1 being lowered.
Figure 21. Cutterhead segment being moved with skating system.
Figure 22. Jacking system layout for Annabell shield.
Figure 23. SPT performing ‘U’ turn after picking up a shield segment- Looking from Eastbound (Joyce) portal.
