Project Overview

Joseph Gallagher Ltd (JGL) successfully delivered the TRS08A Auger Bore Crossing as part of the wider Liverpool Bay Carbon Capture Storage Project.

The works comprised the installation of a 36-metre auger bore drive using a BM800-L2S auger boring machine, installing a 36-inch (914 mm OD) steel product pipe with a wall thickness of 22.23 mm.

The project was completed on programme and within budget with an average workforce of five operatives on site and delivered with no non-conformities in full coordination with United Infrastructure.

Scope of Works

JGL was responsible for execution of the auger boring works, including:

Installation of a 36 m auger bore crossing
Jacking of three steel pipe sections (2 × 9 m, 1 × 18 m)
Operation of the BM800-L2S auger boring machine
Pipe installation through sand and clay ground conditions
Management of excavated material and controlled jacking pressures

Shaft construction, welding, and coating were undertaken by United Infrastructure.

Technical Overview

Boring Method: Auger boring
Drive Length: 36 metres
Product Pipe: 36-inch steel (914 mm OD)
Wall Thickness: 22.23 mm
Ground Conditions: Sand / Clay
Concrete Used: ~33 m³
Muck Removed: ~25 m³
Jacking Pressures: 20 bar rising progressively to 180 bar

Delivery & Challenges

The auger bore drive was carefully sequenced to maintain alignment through variable sand and clay strata. Managing increasing jacking pressures over the full drive length and handling long pipe sections within a confined launch pit were key challenges, requiring close monitoring, controlled advancement, and effective coordination.

Outcome

The successful delivery of the TRS08A Auger Bore Crossing demonstrates JGL’s capability to execute technically demanding auger boring works safely, efficiently, and collaboratively, reinforcing their strength in delivering specialist trenchless solutions for major infrastructure and energy projects.