GEORGE STREET BLASTING

PROJECT DESCRIPTION:

For a new building at 300 George Street in Brisbane’s CBD, Abergeldie developed a methodology and carried out blasting to excavate for the building’s lift shafts. The site is very close to the Brisbane River and has four of the CBD’s busiest main roads on its boundaries. The basement floor had already been excavated to 23m below street level, with blasting taking the bottom of the lift shaft core for the residential a further 6.5m down. Abergeldie was able to drill, load and prepare for blasting out the 5000BCM (bulk cubic metres) lift core in a single week. On Saturday 24 October at 6:25am the surrounding streets and walkways were cleared by traffic control and police and at 7.15am the blast was successfully fired. The complex engineering design and blast methodology provided by Abergeldie,  optimised fragmentation of the rock within the lift core, which simplified the final excavation of loose material, delivering a three week time saving on Mainland Civil’s original program.

Business unit:

Tunnelling

Client:

SEQ Water

Current status:

Complete

Start date:

March 2013

Completion period:

June 2013

Contract type:

Lump sum

Value:

$1 million