Tuesday 16 June 2015

Piling at Mayflower (IV)

Piling works at the Mayflower Station are now about 60% completed. The third traffic diversion along Avenue 4 was implemented earlier this month. The realigned road to the east now allow for piling to be done on the west side of the station box. The diversion is envisaged to last for 3 months. Grouting is taking place on the south side of the station as well.

Stage 3A Traffic Diversion

Monday 15 June 2015

Lentor Excavation

Excavation works have commenced on the north face of the station box. The outline of the launch shaft at the south end of the station is evident too, and we can expect excavation of the shaft to commence by the third quarter of this year. The linkway to the Calrose entrance seems to have completed excavation to the formation level where 3 layers of struts have been installed.

D-walling works continue at the 5XO crossover site along Ang Mo Kio Avenue 4.

Lentor Station
D-walling at 5XO

Thursday 11 June 2015

Tagore - TBM Assembles

The first NFM TBM for the T208 project has begun assembly works within the launch shaft. The TBM will be executing an initial drive on the Woodlands bound tunnel towards the retrieval shaft at Lentor. As of Monday, the main shields and backup gantries have been lowered while the cutterhead remains on the surface of the shaft. The gantry crane has been assembled as well. Tunnelling works should commence in a month's time.

Piling across the Tagore C&C have completed and the first layer of strut have been installed across the entire span of the structure.

TSL1/2 Tunnel Chart, June 2015
Tagore C&C

Wednesday 10 June 2015

Springleaf D-walls & Piles

Clear roads ahead for the Springleaf project as the southbound carriageway was successfully diverted on March 22, shortly after our previous update, completing the major road diversion works at the site. Works on the temporary earth retaining structure for the station box are now underway.

T208 Springleaf 

Tuesday 9 June 2015

Piling at Facility Building (II)

Piling works continue at the RTS Facility Building. A gantry crane has been assembled at the storage site across the road.

Sunday 7 June 2015

T206 Excavation

Excavation works are now in full swing across all 4 structures within the T206 project.

The integral north launch shaft, along with a section of the cut and cover tunnel have been shored and excavated down to the S2 layer. The first STEC EPB TBM for the project had just passed its factory acceptance at the end of May and will subsequently be delivered to the launch shaft. Pre-assembled gantry crane segments are also laid beside the shaft.

2 telescopic excavators deployed at the Sembawang Airbase C&C tunnel

Friday 5 June 2015

Woodlands South D-walls (III)

D-walling works at the Woodlands South station continues. A section of the completed panel near the junction of Ave 1 and Drive 16 has been shored and partially excavated. The diversion of Avenue 1 can be expected by the next quarter for the construction of the remaining diaphragm wall panels next to Christchurch Secondary.

Wednesday 3 June 2015

Piling at Woodlands (IV)

Piling works at the Woodlands station have been going on for almost a year now. Sewer diversion works around Avenue 2/5 by the separate contractor are still on going, and we should see preparations for the diversion of the junction by the next quarter for the crossover tunnel construction. The temporary bus interchange is on track to open by year end, with the terminal structure almost completed.

T203 Woodlands Station
The temporary bus interchange features an unusually high roof as part of the design, believed to enhance ventilation

Monday 1 June 2015

Piling at Woodlands North (II)

Commencing the Q2 updates at the Woodlands North site, numerous piling rigs are executing the bored pile works for the station's earth retaining stabilizing structure. Towards the south, excavation of the launch shaft has reached down to the S3 layer.

The first Kawasaki TBM for the T202 project has been delivered to the site. Supporting the slurry TBM for the upcoming tunnelling work is the assembled slurry treatment plant provided by Pigott Shaft Drilling. Deep Cement Mixing and grouting is being carried out along the proposed tunnel alignment at Woodlands St 91.

TBM 1 and Slurry Treatment Plant delivered next to the launch shaft