Permeation grouting – flood defence scheme, Otley

Challenge

Weak and permeable ground conditions threatened the integrity of a flood defence scheme, requiring ground strengthening and reduced permeability without large‑scale excavation or disruption.

Solution

Geobear delivered precision permeation grouting to strengthen soils and reduce permeability, improving ground stability and supporting the long‑term performance of the flood defence structure.

Flood defence support improved

Enhanced ground performance

Permeability reduced

Controlled grout application

Minimal site disruption

No extensive excavation required

Background

As part of a flood defence scheme in Otley, ground investigations identified permeable and weak soils that could compromise structural performance and long‑term resilience.

A solution was required to strengthen the ground and reduce water migration while maintaining programme efficiency.

Challenge

Traditional excavation and replacement methods would have increased costs, environmental impact and construction time.

The client required a controlled ground improvement technique capable of increasing bearing capacity and limiting permeability within constrained site conditions.

Solutions

Geobear implemented a targeted permeation grouting programme.

Low‑viscosity grout was injected into the soil matrix under controlled pressure, penetrating voids and binding granular material without causing ground displacement. This process strengthened the soil structure and reduced water flow paths beneath the flood defence elements.

All works were carefully monitored to ensure consistent distribution and performance.

Results

Ground strength and stability were improved, and permeability was reduced to support the flood defence scheme’s long‑term integrity.

The solution delivered a lower‑impact alternative to excavation while maintaining programme efficiency and environmental considerations.

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