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Australia
Sub-industry
Reclaimer
Problems
Subsidence
Location
NSW
Year
2024
Solutions
Re-levelling
Technology
Teretek®
Problem
The Stacker/Reclaimer’s rail support footings, which service a coal stockpile, were experiencing general subsidence, with a notable differential settlement between the two rails.
This imbalance was nearing operational tolerance limits and required correction. Additionally, water from a fire hydrant network, hot weather sprayers, historic pipe failures, and localised surface flooding exacerbate subsidence, further compromising rail stability.
Solution
Mainmark addressed the most subsided areas of the rail support footings by drilling through the lowest sections and injecting material into the target support soils.
This approach filled voids, provided additional support, and levelled the footings to within target tolerances. The work was carefully timed to coincide with an operational shutdown to avoid disrupting the conveyor and stacker/reclaimer operations.
Result
The injection process successfully filled voids, re-supported and level corrected the rail support footings to the desired level tolerances, restoring safe operational conditions.
Due to strategic scheduling during an operational shutdown, the project was completed with minimal disruption.
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Mainmark Ground Engineering Pty Ltd
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