Our Projects

Guided Auger Bore – Bellingham, Hexham

Project Overview
Trenchless Solutions Limited was contracted to install a new section of gravity sewer using
trenchless techniques beneath the B6320 in Bellingham, Hexham, Northumberland. The project
required exceptional installation accuracy to accommodate DN400 vitrified clay jacking pipes under
sensitive ground and access conditions. The site was within a residential area with restricted
surface access, making open-cut excavation unviable. A trenchless approach using our
PERFORATOR GmbH Guided Auger Boring system was selected to minimise disruption and ensure
precise alignment.

Description of Works
Working on behalf of Northumbrian Water Group (via main contractor Mott MacDonald
Bentley), Trenchless Solutions Limited completed the installation of 42 linear metres of DN400
Naylor Denlok vitrified clay pipe using a 3-pass guided thrust boring technique.

 

 

Proposed open cut construction	As built trenchless construction
Restricted access: Residential zone with traffic management constraints Close proximity to existing utilities Sensitive environmental conditions	Restricted access: No disruption to road surface or surrounding infrastructure Minimal working footprint
Health & safety: Temporary deep trenches Extensive temporary works	Health & safety: No open excavation across the carriageway Confined works within controlled shaft areas
Cost savings: High reinstatement costs Extended dewatering and pumping times Increased duration of works	Cost savings: Minimal reinstatement Reduced dewatering and over-pumping Shorter construction programme
Environmental: Higher carbon emissions Noise and vibration affecting local residents	Environmental: Reduced CO₂ emissions Lower noise and surface disruption

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