Results
Retaining wall successfully strengthened to required specification.
Works completed safely with no interruption to substation operations.
Drilling methodology reduced vibration and dust, protecting sensitive assets.
Project
Solution
Core drilling of the reinforced concrete wall followed by auger boring of 150mm holes.
Installation and grouting of 6m long GFRP bars.
Testing of installed bars to confirm performance.
Project
Challenges
Strengthening required directly adjacent to live transformers.
Need to minimise vibration, dust, and disturbance during drilling.
Restricted access around existing infrastructure.
Project
Overview
Strengthening works were carried out on the retaining wall at Magill Substation in Adelaide to address low resistivity near transformers. The project required careful drilling methods to minimise vibration and dust in close proximity to sensitive equipment, with works completed without interruption to substation operations.