Tunnelling works for the line have been ongoing for 15 months now. 11 bored tunnels have been completed.
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| TEL1/2 Tunnel Chart, November 2016 |
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| T202 - Breakthrough of TBM 2 at Woodlands Station on October 10. This is the first contract to complete all bored tunnel excavation |
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| T206 - Second assembly of TBM 3 at LS2 |
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| T206 - CP4 Excavation at Woodlands Bound tunnel to Woodlands beneath Innova JC |
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| T207 - TBM 1 tunnel drive from Springleaf is halfway completed (Photo: LTA) |
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| T208 - CP8D Top head excavation between completed TGR-LTR tunnels (Photo: LTA) |
T209 - Breakthrough of TBM 1 at the 5XO site (Nov 11). The TBM will be jacked to the opposite end of the crossover tunnel and relaunched to Mayflower
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| TEL 3 Tunnel Chart (November 2016) |
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| T217 - S-930 tunnel drive to Orchard Boulevard (Photo: LTA) |
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| T219 - S-963 tunnel drive to Orchard Boulevard (Photo: LTA) |
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| T221 - Box jacking tunnel is now estimated to complete by end of this month following complexities with cutter intervention (Photo: LTA) |
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| T225 - TBM 2 towards Shenton Way station (Photo: LTA) |
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| T225 - Completion of tunnelling works for TBM 2 on November 19 |
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| T226 - Adit tunnel 1 construction using open shield TBM (Photo: LTA) |
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