The two shafts are bored at 4m and 5m diameter respectively and to 270m deep. The shafts were blind bored from the surface and lined using remote methods. The shafts was completed prior to the underground tunnels reaching the location of the shaft bottom. Design and construction of 12km access road, bridges, precast yard, site compound, filtration/settling dams, ventilation shaft collars and presinks. Construction of site fencing, switchyard footings and foundations, ventilation fan footings, and provision of water supply from Cordeaux Dam. Construction of 174 composite liners, up to 5.5m diameter, including welding of steel sections and casting of concrete lining.
Complex Challenges
Working within an environmentally sensitive Sydney Catchment Authority controlled land
Construction Period
Nov 05 - May 08
Contract Type
Lump Sum
Value
$24 000 000
Consultants / Designers
Demlakian Engineers
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