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March 2025 - Assembly of the slurry TBM that will bore tunnels for the contract has commenced within the launch shaft. Source: LinkedIn |
Recently, we came across images of the slurry Tunnel Boring Machine (TBM) for contract CR116 being assembled within the contract's launch shaft. Located near the junction of Ang Mo Kio Avenues 3 and 6, the launch shaft was completed some time back following excavation 25 metres down to the base level. Before TBM assembly could commence, adits were constructed to allow for the machine to be jacked forward to commence tunnel construction. This method is similar to the technique previously employed for several launch sites along the Downtown Line's Stage 3 section, with the use of circular shaped launch shafts near the former Tampines Prison (Prison shaft), Tampines Stadium (Stadium shaft) and Pan Island Expressway exit near Upper Changi Road (PIE shaft).