Saturday, 21 May 2016

May Tunnel Progress

The second bored tunnel was completed at the T208 project earlier this month, lining the Changi bound tunnel between Tagore and Lentor. Despite NFM's inagurual entry into the Singapore metro tunnelling market, the french-manufactured machine has set a new record of excavating and lining 23 rings (32.2m) in 24 hours, in addition to completing a 100-ring excavation within 6 days in March. TBM A will now commence dismantling and be retired after having completed the 8-month tunnel drive.

Completion of TBM A drive (T208, John Holland)

Upper Thomson - TBM Assembly (II)

The second TBM for the T212 project was lowered and assembled in April. TBM2 will be driven for the Changi Bound tunnel between the Upper Thomson Launch Shaft and Caldecott station. (Photo credits: Panupong Chamma, April)

Orchard - TBM Assembly

Delivery and assembly of the Herrenknecht mixshield S-963 commenced this week at the T219 Orchard launch shaft. The Woodlands bound tunnel to Orchard Boulevard will be driven first.

Factory acceptance of the machine in December, 2015 (BSS)
Delivery of the TBM (BSS)
Lowering of the front shield (BSS)

Rear shield being lowered (BSS)
(Photo cr: Chutidech)
Lowering of the cutterhead
(Photo cr: BSS)
Fit up (Photo cr: Chutidech)

Outram Park - TBM Assembly

Assembly of both NFM EPBMs are underway at the T222 Outram Park south launch shaft. TBM 1 will lead the Woodlands bound tunnel to Maxwell station.


Marina Bay - TBM Assembly

The first EPBM for the T225 project was lowered down into the launch shaft at Marina Bay at the beginning of this month. Photo credits: Chalermdech Wattanakijyingyong

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