The practice has undertaken specialist studies on a large number of challenging tunnel projects in difficult or complex geological and hydrogeological regimes both in urban as well as remote settings under high cover.

Express Rail Link, Hong Kong - Geological Alignment Model

These studies have addressed issues that have included complex geology, sensitive rock types, short and long term instability problems and have derived solutions for both drill and blast and Tunnel Boring Machine excavation.

The experience with large span openings in weak rocks is significant and has established the feasibility of schemes beyond prior precedent practice.

The practice has a specific track record in alignment assessments of geological and stability conditions and has developed significant capability in the evaluation and assessment of in situ stress fields. This includes high in situ stress conditions related to geological setting, weak rock mass conditions and very high cover alignments.

The practice has the capability to assess critical interfaces using a variety of state of the art modelling techniques to evaluate ground deformation and structure interactions.

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