Underground tunnel construction site

Audit  |  Implementation  |  Optimisation

Underground Construction Material Specialist

Optimising sprayed concrete, pre-excavation grouting and ground support systems for safer, more efficient underground construction.

Expert Solutions for Complex Underground Challenges

We help make difficult underground conditions easier to manage. By combining specialist technical knowledge with hands-on, site-based experience, we provide clear, practical solutions that work in the real world — reducing risk, improving performance and supporting successful project delivery.

At Trelayne Technical Services, we combine decades of hands-on experience with cutting-edge material expertise to deliver safer, more efficient underground construction. Led by industry veteran Nick Chittenden, we provide independent consulting, practical site support and strategic optimisation for sprayed concrete, ground support systems, and grouting operations.

Underground tunnel construction and sprayed concrete application

What We Focus On

Service 01

Sprayed Concrete Materials, Design & Application

Specialist material selection, mix design and application optimisation for underground structures.

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Service 02

Pre Excavation Grouting & Water Ingress Control

Targeted grouting programmes to manage groundwater and stabilise ground conditions ahead of excavation.

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Service 03

Injection Anchoring Grouts & Ground Support Systems

Selection and optimisation of anchoring grout systems for safe, reliable ground support in challenging conditions.

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Service 04

On-site Technical Support & Supplier Support

Hands-on site presence and supplier liaison to ensure materials perform as specified throughout the project lifecycle.

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Specialist underground materials expertise

Practical site solutions, not theoretical advice

Measurable improvements in production, safety, and cost

Support from audit stage through to implementation and optimisation

UK based, delivering support globally

Who We Support

Tunnelling & Infrastructure
Mining & Resource Projects
Civil Engineering & Major Contractors
Renewable Energy (Hydro, Geothermal)
Underground Construction Material Suppliers
Nick Chittenden — Founder of Trelayne Technical Services

About the Founder

Nick Chittenden

Nick Chittenden brings nearly 40 years of international experience in underground construction, sprayed concrete and ground support. He is widely recognised in the tunnelling community for driving improved material performance and operator competence.

Ready to improve performance, reduce waste and optimise your operations?

Call +44 7770 889782