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Project Profile W8009

Stacker-reclaimer Rail Re-levelled

Sub-industry
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.

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Stacker Reclaimer Rail Re Levelled
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