Friday, 4 September 2015

Mandai Depot & T206

Excavation works progresses along the cut and cover structures along the T206 project.

Launch Shaft 1 & 2
The Changi Bound TBM has completed assembly works within the adit tunnel of LS2 and will launch by the middle of this month. Excavation of LS1 has completed and the team is now blasting the horizontal section on both ends for the adit tunnel. The depot-bound STEC EPBM is slated to commence tunnelling along RT3 by the end of the year.

SBAB C&C & Escape Shaft 2
The ES2 structure now has the entire S1 layer shored along its entire length. The north launch shafts at the Sembawang Airbase C&C tunnel has now been excavated down about 20 meters, close to the formation level with an approximate reduced level of 95.000. The gantry cranes have been installed around the launch shafts, and tunnelling here should commence by year end with the TBMs arriving and assembling in the 4th quarter.

Mandai Depot
Columns along the north end of the stabling area are currently being cast. The structure will feature 45 parallel tracks, more than thrice the width that of the Downtown Line's Gali Batu Depot. Each track will accommodate for 2 x 4 passenger cars to effectively house the entire fleet of the 43km Thomson-East Coast line. The depot has been intentionally over-designed for future fleet expansions should the need arises.

Mandai Depot, T201

Thursday, 3 September 2015

Woodlands South Excavation

The first phase of the D-wall has been completed on the north face of the Woodlands South station. Excavation works at the S1 layer is in progress. The station will be constructed top-down, and preparations for casting of the roof slab is visible at Entrance D. The next traffic diversion should be implemented by early 2016.

Tuesday, 1 September 2015

Woodlands Excavation

After a year of piling, the T203 project team have commenced excavation works at the crossover tunnel. Sewer diversion works around the Avenue 2/5 junction are still ongoing and will complete soon. Piling works are now concentrated at the site of the vent shafts and cooling tower on the north end of the station box.

A large amount of rock lies shallowly beneath the T203 project site, and the overall excavation process is envisaged to be one of the slowest among all the projects.

Commencement of excavation at the Woodlands crossover tunnel