Woodlands North - TBM Assembly

The first Kawasaki slurry TBM has been assembled at Woodlands North for the T202 project. Supporting the impending tunnelling works are the installation of the backup gantries and gantry cranes at the launch shaft. The 2nd TBM has also been delivered to the site. Tunnelling should commence by the end of the year.

Excavation of the crossover tunnel adjacent to the launch shaft is about complete, and its site is temporarily housing the backup gantries for both TBMs. The formation level of the tunnel here matches the existing ground level of the site due to the earthworks slope treatment and the natural shallow design of this project. Rockheads are visible on either sides of the structure.

Piling works are ongoing at the station box and north crossover tunnel.

T202 Woodlands North, August 31

Assembly of TBM1

Tunnelling Commences for Thomson Line

The first tunnel boring machine (TBM) for the Thomson Line has commenced mining works at the Tagore site. An issue with the TBM's internal electrical systems delayed the inaugural tunnelling by several weeks. Nonetheless, the achievement of this significant milestone is one to be joyous among the Leighton-John Holland & NFM team.

The TBM has started the drive on the Woodlands Bound tunnel towards the Lentor Station. The geological conditions along the tunnel route consist mostly of residual soil of the Bukit Timah Granite (Grade VI), with minimal occasions of fill along the crown and weathered granite along the bench and invert. The excavation works should take around 11 months to complete, varying on the progress of the tunnel drive.

TEL1/2 Tunnel Chart, August 26 2015

TBM1 (right) in launching position at end July - NFM Technologies 

TBM2 & TBM1 this month - John Holland

NFM TBM - Factory Acceptance (II)

The first slurry TBM for T216, and the fourth overall produced by NFM for the Thomson Line project has passed its factory acceptance test last week. The machine should be delivered to the site by the Q4 of this year. Tunnelling works for the project should commence around the first or second quarter following the assembly of the STP and ancillary equipments.

FAT signed by representatives from NFM, NHI, LTA and Daewoo