JGL Corporate brochure - Flipbook - Page 21
Tunnelling and underground works
Civil and structural works
We deliver complex tunnelling and underground
infrastructure projects across a wide range of ground
conditions and environments. Our experience spans
major water, energy, transport and utility schemes,
where precision, safety and reliability are critical.
We deliver high-quality civil and structural works that
underpin complex infrastructure projects.
Using a range of proven methodologies — including
TBM, EPB, slurry, SCL, pipe jacking, microtunnelling
and conventional techniques — we tailor solutions
to suit each project’s technical and environmental
constraints.
Working closely with designers and project teams, we
ensure structures are buildable, efficient and aligned
with construction methodology.
Our integrated approach combines engineering
expertise, specialist plant, and experienced site teams to
reduce interface risk and provide clients with certainty
from planning through delivery.
Whether operating in urban settings, constrained sites
or challenging ground conditions, we deliver safe,
high-quality underground works that meet programme,
budget and performance expectations.
Shaft sinking
We provide specialist shaft sinking services to support
tunnelling, utilities, access structures and underground
works. Our capability covers shafts of varying diameters,
depths and ground conditions, including complex
environments with high groundwater pressures or
restricted access.
From temporary launch and reception shafts to
permanent structures, we manage the full lifecycle from
design development and temporary works to excavation,
lining and fit-out. Our teams use proven construction
techniques supported by specialist plant and lifting
equipment to ensure safe, efficient execution.
By integrating shaft construction with wider tunnelling
activities, we minimise programme risk and deliver
robust, durable assets that form a critical part of
underground infrastructure systems.
Our expertise includes reinforced concrete structures,
foundations, retaining walls, temporary works and
permanent structural solutions.
Our integrated delivery approach also allows us to
coordinate civil works seamlessly with tunnelling, shafts
and specialist operations, reducing interfaces and
improving programme certainty.
With a strong focus on quality, safety and engineering
precision, we deliver durable structures that meet
demanding performance requirements while supporting
the successful delivery of major infrastructure schemes.
Marine and landfall works
We specialise in technically complex marine, coastal
landfall works, delivering projects where land and sea
interfaces present unique engineering and environmental
challenges.
Our experience includes sea outfalls, intakes, coastal
tunnelling, offshore structures and nearshore
construction. We manage works with tidal constraints,
adverse weather conditions, restricted access and
environmentally sensitive locations through detailed
planning and robust methodology.
By combining marine expertise with specialist tunnelling,
lifting equipment and environmental controls, we deliver
safe, efficient solutions that minimise disruption and
protect surrounding ecosystems.
Our proven track record in marine environments makes
us a trusted partner for water, energy and industrial
clients undertaking critical coastal infrastructure works.
Joseph Gallagher Group | CORPORATE PORTFOLIO | 2026
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