As space becomes scarce tunnels, basements and underground mines become larger, costlier and more complicated. Built in soil, rock and water, safe and successful underground projects need specialist knowledge of these materials.

High quality geotechnical advice on potential ground hazards and constraints is vital to treat risk intelligently and to manage project costs.

Our team develops comprehensive geotechnical, hydrogeological and geological models to analyse and interpret geotechnical properties and ground conditions.

Geotechnical models

Accurate and reliable geotechnical data is essential to understanding the nature of the ground conditions and the risks to underground projects. Geotechnical baseline reports (GBR) are rapidly becoming an essential item for tunnelling projects. As geotechnical specialists we are ideally placed to prepare, review or assess the impacts of GBRs on a project.

Hydrogeological models

A hydrogeological assessment is an important part of the design of underground spaces and selection of tunnel routes, tunnelling methods and techniques for controlling groundwater. By using hydrogeological models with in-situ testing and geotechnical investigations we assess groundwater inflow and groundwater control methods – helping to highlight potential risk areas. We have advanced in-house computing facilities with a wide range of software for the analysis of groundwater flow problems, allowing detailed analysis and assessment of and design methods to control inflow.

We apply finite element and finite difference modelling that’s tailored by our specialists to analyse the interaction between underground excavations and the surrounding terrain, including the effects of groundwater, ground support and structures in the vicinity of the underground space.

Geological models

Observation of the ground, surface and of structures is vital. It allows the validation of the design and analysis assumptions, control of construction activities and an effective way of optimising the tunnel design.

Our specialist team has experience in designing, specifying and installing cost effective instrumentation and monitoring systems, as well as the collation and interpretation of field data.