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Australia
Sub-industry
Mining
Problems
Subsidence
Location
WA
Year
2009
Solutions
Re-levelling
Technology
Uretek®
The problem
Following unusually heavy rainfall, subsidence had become evident. The rail had subsided and deflected beyond safe tolerances during operation of the stacker-reclaimer.
In 15 days Uretek Deep-Injection and Uretek Slab- Lifting had the rail re-levelled and fully re-supported.
The solution
To re-level the stacker-reclaimer rail and to densify the sub-grade and re-support the affected portions of the rail and its concrete base.
The Result
Over a 15 day period, our team surveyed the rail, undertook DCP testing of the sub-grade, drilling and injected the foundation ground, and successfully re-established support of the rail. Re-levelling was achieved as required under the various affected parts of the rail.
All levels were monitored daily and submitted to the Client’s engineers on a metre by metre basis. Densification of the sub-grade was checked by mine engineers by running the extremely heavy stacker- reclaimer backward and forward over the re-supported sections of rail, whilst monitoring deflection.
Following the works, the rail was surveyed as level, within original design tolerances and observed not to deflect under operational load conditions.
Resources
Project Resources & Downloads
Stacker Reclaimer Rail Re Levelled
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