Thursday, 21 January 2016

January Tunnel Progress

TEL1/2 Tunnel Chart, January 2016
(T206 - Reception tunnels emerge between the mainline tunnels in actuality, however shown otherwise on the chart for simple illustration)

Contract T202
Excavation of the Changi-bound tunnel is advancing at a slow pace and 2 cutterhead interventions have been performed since the launch of the TBM back in December. It's sister TBM is slated to commence mining on the Woodlands-bound tunnel by the end of this month.

Changi Bound Tunnel, T202 WDN-WDL (Dec 28)





Contract T206
Excavation of the first EPB machine at LS1 has commenced. The second EPB machine commenced mining at SBAB on the Woodlands Bound tunnel to Woodlands South. The third EPB machine is in the midst of assembly and should commence excavation on the Changi Bound tunnel by February.

The 2 slurry TBMs are progressing. S-893 is now beneath Champions Way and advancing into the Innova JC premise.

Ring progress as of December 29
S-893 - Changi Bound Tunnel: Ring 128 (20% completed)
S-894 - Woodlands Bound Tunnel: Ring 30 (5% completed)

Ring progress as of January 21,
S-893 - Changi Bound Tunnel: Ring 190 (30% completed)
S-894 - Woodlands Bound Tunnel: Ring 60 (9% completed)

T206 TBM progress
Commencement of excavation by TBM4 at SBAB RT1
TBM5 in the midst of assembly at the RT2 portal


Contract T208
Excavation of the Changi-bound tunnel is advancing at an incredibly quick pace. The machine has been maintaining an advance of close to 10m/day over the last several weeks. Breakthrough is anticipated around April if the TBM continues churning through favorable soil.

TBM A has begun to pick up pace after being hindered by the problematic ground for nearly 3 months.

Ring progress as of January 21,
TBM C - Changi Bound Tunnel: Ring 317 (39% completed)
TBM A - Woodlands Bound Tunnel: Ring 75 (9% completed)

T208 TGR-SPL Tunnel Progress
(January 8 - Sunil)
(January 1 - Max Patanna)


Contract T216
Photos of the assembly works at the Dalvey Launch shaft for the NFM slurry machine. Photo credits: Panuwat Fongon




TEL3 Tunnel Chart, January 2016

S-936 Assembly


Assembly works for Herrenknecht's third slurry TBM for the Thomson Line project was carried out at the T215 Mount Pleasant site earlier this month. The 782m-long drive for the Changi-bound tunnel towards Caldecott is anticipated to experience mixed-soil, and a small portion of rock along the tunnel route.




































S936 Assembly photo credits: Padraig Higgins, Chong

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