Posted by: Erin Shilton June 26, 2017

In April 2017, Abergeldie was engaged by Yarra Valley Water (YVW) for the construction of Stage 1A – 1D of the new Kalkallo Creek Main Sewer (KCMS). This exciting $28.4 million project is part of YVW’s Northern Growth Corridor Sewer Servicing Strategy. The total length of the proposed sewer is over 13 km comprising of three stages of which Stage 1 is approximately 3.4km long.

The scope includes:

  • Excavation of launch and receival shafts for tunnel boring and pipe jacking
  • Tunnelling and pipe jacking of 3369m of 1.395m internal diameter glass reinforced pipe
  • Maintenance hole installation at various locations of varying sizes from 2400mm to 3500mm
  • A number of smaller connection lines to exiting maintenance holes
  • Installation of a 2400m diameter vortex drop maintenance hole

The tunnel alignment includes crossings beneath Merri Creek and the Hume Freeway and a connection to the existing Amaroo Main Sewer, where the tunnel boring access shaft will be converted into a manhole.

Tunnel boring and pipe boring is being carried out using Abergeldie’s in-house owned, maintained and operated Herrenknecht equipment.

Detailed surveying is required to confirm the line and level of new sewers and of existing sewers at tie-in positions. Close interface management is required with parties involved in other real estate development and infrastructure projects nearby, including the Kallo Estate Development, Cloverton Estate Development, Merrifield Business Park Development, Klandy Drive Branch Sewer, Lockerbie South Branch Sewer and Merrifield Central Branch Sewer

Works began in April 2017 and are expected to be completed at the end of June 2018.

Posted by: admin November 11, 2015


Abergeldie were engaged to undertake works to restore the immediate area around the Tunnel 2 outlet portal for Essential Energy’s Nymboida Power Station. Works included the demolition of existing remains of the damaged outlet, breaking down and removing steel pipe, fittings and trestle bridge, breakdown and removal of thrust blocks and concrete abutments, associated excavation and earthworks and finally to construct a new 1800 steel pipe outlet with a new reinforced concrete thrust block.

Posted by: admin


Stabilisation of an existing, rough-hewn, unlined tunnel to protect an existing water main which passes through it. Scope included removal of loose material from the tunnel surfaces, removal of existing support members, placement of primary shotcrete surfacing to stabilise the tunnel surfaces, placement of reinforcement up-stands and placement of a final, permanent 150mm thick layer of structural shotcrete with weep holes.

Complex Challenges:

To protect workers in the tunnel while it was in an unstable state, a protective steel cage was designed, fabricated and mounted on a movable trolley.

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The refurbishment of a 2500m long, 3.5m x 2.5m tunnel on the Sunshine Coast for SEQ Water showcases our tunnelling capabilities. Additional works include extension of a rail system, supply and installation of a Portal Protection System to protect personnel from rock falls and supply and installation of a communication system within the tunnel. Works commenced onsite mid-March and already the project is one week ahead of schedule due to planning in the pre-commencement phase and the exceptional performance by the site team.