Friday, 13 October 2017

Gardens By The Bay Cast (III)

Casting of the station structure is progressing at the concourse level up to the basement roof slab.

T228 Gardens By The Bay Station

Wednesday, 11 October 2017

Marina South Cast (III)

Excavation works for the station zone adjacent to the cut and cover tunnel are progressing down to the formation level. The first completed portion at the center of the station sees the structure cast all the way up to the basement roof slab. Bored tunnelling works on the Woodlands bound drive is on its main drive with a third of the progress completed.

Marina Mall was diverted at the T228 interface at the end of Q3 for the cut and cover tunnel construction adjoining the Gardens By The Bay Station. Backfilling works across the completed portion of the C&C tunnel are underway.

Structure progressing at Marina South

Monday, 9 October 2017

Marina Bay Cast (IV)

Excavation and casting works have reached the lowest point of the station's structure at the Woodlands bound platform. Casting of the paid linkway roof and entrance substructures are ongoing.

T226 Marina Bay Station

Sunday, 8 October 2017

Shenton Way Excavation (III)

Bored tunnelling works between Marina Bay and Shenton Way stations have completed with the second and final drive of TBM 2 docking at the upper platform of the station. FSC works have commenced for the lower tunnel. The porous geological conditions around the former shoreline beneath Shenton Way has created an ongoing challenge for TBM 1 since its launch in April, which has progressed little since its main drive conversion.

Bulk of the station's structure has reached the under-lower platform level, with a final zone of excavation works due for completion within a month. Excavation and shoring works have commenced at entrance C.

Completion of 144-bored pile linkway between the station, entrance C and Asia Square

Friday, 6 October 2017

Maxwell Cast (II)

The final portion of roof slab across the center zone of the station is being cast. Structure of the station has reached the concourse and upper platform levels at the south and north end respectively.

T223 Maxwell Station

Thursday, 5 October 2017

Outram Park Excavation (III)

Excavation works across the network of new unpaid and paid linkway are progressing across the site. The project's second and final TBM relaunch took place at the end of Q3 for the Changi bound tunnel drive towards Havelock.

T222 Outram Park

Tuesday, 3 October 2017

Havelock Excavation (IV)

Excavation works are nearing the formation level beneath the S7 level and should complete by the end of the year. The excavation works for entrance D have also commenced, the last of the 5 entrances to be constructed.

Havelock Station fully strutted down to the formation level in preparations for the bottom-up construction

Monday, 2 October 2017

Great World Cast (III)

Excavation works have reached the formation level and the first zone of the station's underplatform level is being prepared for casting. Casting of the internal structure and external walls will proceed from here.

The first drives of both TBM S-945 & S-946 have completed and the replacement TBM shields have arrived at the site of both launch shafts in preparations for the relaunch.

T220 Great World station

Sunday, 1 October 2017

Orchard Cast (IV)

The concourse and platform slabs of the station have been completed, and works on the lowest platform link level which will connect to the NSL station are in progress. Excavation works have completed at entrance B, and the roof structure of the cripple siding tunnel is mostly completed. Bored tunnel works from the 2nd drive are 75% completed with completion due next month, and the Stage 7 TD for the final stretch of underpass bored piling & excavation works to entrance C beneath Paterson Road is being prepared for implementation in the next quarter.

Orchard Station & Cripple Siding C&C tunnel site

Friday, 29 September 2017

Orchard Boulevard Excavation (III)

Excavations works have reached the formation level, with commencement of rebar installation at the underplatform level.

Orchard Boulevard Station

Wednesday, 27 September 2017

Napier Excavation (III)

The relaunch of TBM S-930 at the Napier launch shaft for the Changi bound tunnel drive towards Orchard Boulevard took place earlier this month on September 15. Excavation works are at the S6 layer at the deepest point and RC works for the station's underplatform structure should start by the end of the year.

T217 Napier Station (View towards Tanglin)

Monday, 25 September 2017

Stevens - RTBM Assembly

Assembly works are in progress for the second launch of the compressed-air Rectangular TBM along Whitley Road. The TBM has been reused following the successful completion of the subway structure at T221 Havelock last November. The 37-segment drive is scheduled to start next month and be completed by the end of the year, following which the TBM will be dismantled and proceed for a third run at the TELC6 T311 Bedok South project.

Diaphragm wall works for the station structure have finally completed and casting of the roof slab is ongoing along the final zone. Traffic Diversion 4 will be implemented at the station next month in preparation of the commencement of excavation works at the station.

Assembly of 65 tonne CRTG gantry crane for the RTBM works at SCGS

Sunday, 24 September 2017

Mount Pleasant Cast (III)

The concourse slab is largely completed in the station structure and the final concrete pour at this level is ongoing. The S2 struts along the south side of the station has already been dismantled in preparations for the formwork installation for the RC roof slab casting.

Overnight casting works for the concourse slab at Mount Pleasant Station

Wednesday, 20 September 2017

Caldecott Cast (V)

Structure of the station is set to be completed by the end of the year as the station's roof slab gets cast concurrent with the strut dismantling works. Works will now focus on the backfilling and superstructure works on the new entrances, together with the A&A works at the Circle Line concourse and subsequent closure and conversion of the existing entrance A into an emergency escape staircase.

Caldecott Station

Monday, 18 September 2017

Upper Thomson Cast

Structure of the station is at varying progress with the basement roof and concourse slab cast at different zones. With the bored piling and ground improvement works completed, a total of 3 telescopic clamshell excavators are now facilitatating the excavation works for the top-down construction of the station. 

Upper Thomson Station

Friday, 15 September 2017

Contract Award - T200

SMRT Trains has been awarded the Thomson-East Coast Line (TEL) operator license after a 5-month closed tender evaluation. The TEL operator tender was called in February this year, with both existing local rail operators invited to participate. SMRT Trains offered a service fee of approximately S$1.7 billion for the 9-years service period between 2019 and 2028, with a possible extension to 2030 subjected to operational performance. 

600 staffs will be recruited over the next 2 years for the initial operations of TEL1.

Thursday, 14 September 2017

Bright Hill Cast

Bored tunnelling works for the project were completed 2 weeks back with the docking of TBM 1 at the Upper Thomson Station, completing all 4 TBM drives under the scope of works. Preparations for the T211 tunnelling works extensively involved the challenging construction of 4 staggered launch shafts, 2 STPs, reconstruction of 2 POBs and ground improvement works beneath Block 258 at Ang Mo Kio.

Casting of the concourse slab is largely completed at the station box, with excavation works proceeding down to the platform level at certain zones. Casting of the Cross Island Line tunnels at the north end of the station box are progressing in tandem with the RC works at the concourse level. Backfilling works are underway over the completed north cut and cover tunnel structure.

Bright Hill Station

Tuesday, 12 September 2017

Mayflower Cast (V)

A realignment of Avenue 4 has been implemented for the RC construction of the 7th and final entrance B. The superstructure works for Entrance E & G are underway, and casting works for the closing of the station box are in progress to complete the station structure.

Realignment of Avenue 4

Monday, 11 September 2017

Lentor Cast (IV)

Excavation works for the station appears to have completed with structural works taking place at the platform level. Casting of the entrances are progressing, with the first superstructure emerging from Entrance D. Both TBMs are advancing through rock around Block 174 beneath AMK Avenue 4 and is targeted to breakthrough by December.

Lentor Station

Saturday, 9 September 2017

Tagore Backfill (II)

The Tagore site has begun demobilization works by the T208 team as it prepares to handover the site to CTCI and other SWCs for the temporary staging area works between Tagore and Mount Pleasant. The STP and gantry cranes have been demobilized, with hardcore compacted above the station box. The FSC, cross passage and bracket installation works are ongoing for the twin tunnels towards Springleaf.

Tagore C&C site

Friday, 8 September 2017

Springleaf Cast (III)

Structure of the station box is largely completed with about 2/3 of the roof slab volume cast. BSC is scheduled by the end of the year.

Springleaf Station

Wednesday, 6 September 2017

Facility Building Cast (IV)

The T207 project is wrapping up with the completion of bored tunnelling works and the structural completion of the RTS Facility Building. The launch shaft at SBAB has been handed back to T206 following the completed FSC and installation of SWC brackets along the twin tunnels to the Facility Building.

RTS Facility Building

Tuesday, 5 September 2017

Sembawang Airbase Backfill

Backfilling works are underway at SBAB upon completion of the tunnel roof structure. As the installation of the SWC brackets in the tunnels complete by the next quarter, the interlinking tunnel structure within each launch shaft will be cast to provide a complete substructure tunnel linkage across TEL1 for trackworks to proceed on to the reception tracks and mainline from Mandai Depot.

S1-S2 removal with concurrent backfilling works at Sembawang Airbase C&C

Monday, 4 September 2017

Woodlands South Cast (II)

A final realignment of Woodlands Avenue 1 has been implemented for the excavation and construction of Entrance D, the last of the 4 entrances to be built. Structure of the station has reached the platform level, and the superstructure of Entrance A is emerging from ground level.

Woodlands South Station

Sunday, 3 September 2017

Woodlands Cast (IV)

Casting of the station's concourse slab is largely completed and works are proceeding up to the roof level. Excavation works at the crossover tunnel site have completed facilitating the breakthrough of the T206 tunnels.

T203 Woodlands 

Friday, 1 September 2017

Woodlands North Cast (V)

Structural works for the station box are largely completed at the roof level and BSC is targeted by the end of the year. Casting of the north crossover tunnel is ongoing.

T202 Site overview

Tuesday, 1 August 2017

August Tunnel Progress

The 2km long twin tunnels between Springleaf station and the RTS Facility Building have completed under the T207 project. These are the longest single mainline tunnel drives achieved under the MRT construction since the Circle Line 4 project a decade ago. TBM 2 brokethrough the facility building overnight (Jul 31), while TBM 1 completed the Woodlands bound tunnel on July 9.

Together with the completion of TBM C2 at Springleaf under the T208 project, bored tunnelling works are officially completed under the Civil Team 1 projects. With 4 TBM drives completed in July, 6 TBMs remain between 5XO and Caldecott station under Stage 2 of the line.

Envisaged completion for remaining 6 TBMs under TEL2:
T209 TBM 1/2 - Q4 2017
T211 TBM 1 - Sep 2017
T212 TBM 1 - Q4 2017
T212 TBM 2/3 - Q1 2018

TEL1/2 Tunnel Chart, July 2017
T207: TBM 1 breakthrough at Facility Building on July 9 (Photo: Raju)

Wednesday, 19 July 2017

Gardens By The Bay - TBM Reassembly

Tunnelling works for the Woodlands bound tunnel has completed from Gardens by the Bay station to the Marina East shaft, where the TBM has U-turned and commenced the second drive back towards the station. RC structure of the station is progressing between the platform and concourse levels.

Completed 700m long Woodlands bound tunnel beneath the Marina Channel

Tuesday, 18 July 2017

Marina South - TBM Assembly

The 38th and final TBM for the Thomson stretch of the line has finally been lowered and is being assembled at the launch shaft. The CREG EPBM will drive the 750m Woodlands Bound tunnel towards Marina Bay first. Structure of the station continues to be cast, with installation of rebar ongoing at the roof slab level at the highest point. 

Marina Boulevard has been realigned back for shoring and excavation works to proceed for the interconnecting section between the station and cut and cover tunnel. Realignment of Marina Grove is being prepared for similar works to be carried out at the T228 interface.

Marina South Station

Monday, 17 July 2017

Marina Bay Cast (III)

Structure of the station is now at the underplatform level of the Changi bound platform. Excavation work at all 3 new entrances and casting of the interchange linkways are in progress.

Marina Bay station

Sunday, 16 July 2017

Shenton Way Excavation (II)

Structure of the station has now progressed to the underplatform level of the Changi bound platform. Conversion to main drives are underway for both TBMs.

Shenton Way station

Friday, 14 July 2017

Maxwell Excavation

Excavation works are in varying progress across the station box as the next realignment of the South Bridge, Neil and Maxwell Road kicks in.

Maxwell Station

Wednesday, 12 July 2017

Outram Park Cast (IV)

Structure of the station has reached the underplatform level. Excavation of the linkways and initial drive of the Woodlands bound TBM towards Havelock are in progress.

T222 Outram Park site

Tuesday, 11 July 2017

Havelock Excavation (III)

Rock excavation works continue at the station box, with works commencing on entrance B.

Havelock station overview

Monday, 10 July 2017

Great World Excavation (III)

Excavation works are still in progress from the previous quarter towards the formation level. The replacement shields for both TBMs have arrived on site, and an acoustic shed is being constructed over both launch shafts.

T220 station top-down

Sunday, 9 July 2017

Orchard Excavation (II)

Excavation works are in progress at entrance B and the cut and cover tunnel. The second phase of bored piling works beneath Paterson Road is underway for the underpass construction to entrance C.

Next phase of traffic diversion along Paterson Road implemented for the subway bored pile construction to Wheelock

Saturday, 8 July 2017

Orchard Boulevard Excavation (II)

The lower concourse structure has now been completed and the final phase of excavation works are proceeding down to the formation level for the casting of the underplatform and platform levels. Pipe jacking works are underway for subway B.

Last stage of excavation works at Orchard Boulevard station

Friday, 7 July 2017

Napier Excavation (II)

Bulk excavation works continue at Napier station.

Excavation works at station box

Tuesday, 4 July 2017

Stevens D-walls (VI)

Construction of the diaphragm wall continues with around 45 more panels to be constructed for the station and Entrance B. Stevens is the sole station along the Thomson stretch with its earth retaining structure incomplete, and works are targeted to complete by the 4th quarter.

Preparations of the launch shaft structure for the arrival and assembly of the RTBM in Q3

Sunday, 2 July 2017

Mount Pleasant Cast (II)

Structure of the station is proceeding up at the Mezzanine level. TBM S-936 had been re-lowered into the launch shaft in May for the commencement of tunnelling works on the Woodlands bound tunnel.

Mount Pleasant Station

Saturday, 1 July 2017

Caldecott Cast (IV)

The first section of roof slab has been completed at the southern end of the station as structural works take shape.

Caldecott Station

Friday, 30 June 2017

Upper Thomson Excavation

D-walling works for the station was completed earlier this quarter and the associated silos have been dismantled. Bored piling works for the station's foundation are taking place at the south side of the station, while excavation works on the north end has reached the concourse level.

Bored piling works around entrance D

Thursday, 29 June 2017

Bright Hill Excavation (II)

Excavation works at the station box are ongoing to the platform level, with the concourse slab completed. The Woodlands bound tunnel to Mayflower has presumably been completed by TBM 4, and the remaining 3 TBMs are anticipated to complete by the next quarter.

Ground improvement works at the extracted H-pile foundation of the former POB along Upper Thomson Road

Wednesday, 28 June 2017

Mayflower Cast (IV)

Structural works for the station and entrances are largely completed. A realignment of Street 11 has taken place for the construction of the underpass link from the station to entrance D.

Basic structure completed at entrance D & realignment of AMK St 11 for the remaining subway construction

Tuesday, 27 June 2017

Lentor Cast (III)

Construction of Entrance C has started adjacent to the launch shaft. Excavation works for the station is almost completed with structure of the platform level presumably taking shape.

Construction of Entrance C,D and E

Tuesday, 20 June 2017

Tagore Backfill

Filling works are in progress over the completed structure at Tagore which would site the 1 hectare trackworks staging ground to come. The final TBM C2 is about 75% completed and will complete by the next quarter.

Backfilling works and de-strutting over the concourse slab 

Springleaf Cast (II)

Structure of the Springleaf station is taking shape with the first section of roof slab completed.

Springleaf station

Sunday, 18 June 2017

Facility Building Cast (III)

The full face rock conditions experienced by the final 2 EPBMs from Springleaf have significantly hindered the progress over the last quarter with an average advancement rate of a single ring building per day. TBM 1 is about 30 rings from breakthrough and should complete within a month's time.

Tower crane erected to facilitate the RC works of the facility building superstructure

Saturday, 17 June 2017

TEL1 Tunnelling Completes

Bored tunnelling works have completed this month under Stage 1 of the project between Woodlands North, Mandai Depot and the Sembawang Airbase cut and cover tunnel site. 12 tunnel drives were launched using 3 Earth Pressure Balance machine 4 Slurry TBMs which bore through the weathered Bukit Timah Granite to complete the 8km network of mainline and reception tunnels beneath Woodlands.

For most of the tunnels, the basic structural completion (BSC) have already been achieved with the first stage concreting (FSC) for the track bed, together with brackets installation for the various SWC. Trackworks are slated to commence through the tunnels by the end of 2017, with the remaining SWCs gaining access from the 2nd half of 2018.

Mandai Depot Stabling Yard

Tuesday, 13 June 2017

Woodlands South Cast

Concourse slab of the station structure has been cast and excavation works are progressing down to the platform.

Excavation works of UPC to the future Woodlands Health Campus