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Rail embankment badger sett void filling

Challenge

Badger sett activity within a rail embankment created voids and instability, posing a risk to track support and requiring remediation without disturbing wildlife or rail operations.

Solution

Geobear used precision geopolymer injection to fill voids and stabilise the embankment, restoring ground integrity with minimal excavation and limited disruption to rail services.

Voids filled and stabilised

Ground integrity restored

Wildlife‑sensitive approach

Minimal disturbance

Rapid installation

Reduced possession time

Background

Animal burrowing within rail embankments can create hidden voids, reducing soil stability and increasing the risk of settlement beneath track infrastructure.

In this case, badger activity had compromised the embankment, requiring urgent but sensitive intervention.

Challenge

Traditional excavation and rebuild methods would have been disruptive, time‑consuming and potentially harmful to protected wildlife habitats.

A solution was needed to stabilise the embankment while minimising environmental impact and maintaining rail operations.

Solutions

Geobear implemented a targeted geopolymer injection programme to fill voids created by the badger sett.

Expanding geopolymer resin permeated cavities and strengthened surrounding soils, increasing stability and restoring load‑bearing capacity.

Injection was carefully controlled to ensure effective treatment while limiting surface disturbance.

Results

The embankment was stabilised and voids eliminated without major excavation or prolonged rail closures.

The solution provided a fast, environmentally considerate method of restoring long‑term ground stability.

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