21/11/2025
Strong progress at the Serpentine Pipehead Dam Remediation Project for Water Corporation, with major advances made across the embankment, foundation, and structural components of the works.
Highlights include:
- Bulk excavation of the main dam embankment – 6,000 m³
Foundation treatment shotcrete applied to the exposed rock foundation within the main embankment footprint and management of groundwater inflows from weathered residual soils.
- Demolition and excavation of the lower abutment down to rock foundation level for retaining wall foundation, including 235 m³ of granite bedrock. drill, blast and extraction.
- Embankment reconstruction works with the placement of the chimney filter at the concrete dam interface and Zone 1A, Zone 2A and 2B filter blankets.
- Retaining wall construction underway with slope-correction concrete works completed – approximately 150 m³; and 24 rock anchors drilled and installed, each extending 6 m into bedrock.
A great team effort in safely and efficiently delivering the next stage of this critical infrastructure upgrade. We’re looking forward to continued momentum as we progress through the remaining remediation works.
