Tunnels & Underground Engineering

For over six decades, Delve Underground has been providing design and consulting for all phases of tunnel and underground engineering projects.

From feasibility studies to detailed design, to engineering and management services during construction, we have provided innovative and practical solutions for tunnel and underground projects all over the world. We are recognized as experts in the design of tunnels, deep shafts, temporary works, portal and slope stability, deep foundations, building protection measures, ground improvement by grouting and freezing, and dewatering.

We work directly for government agencies, contractors, private sector owners, and as a specialty subconsultant to other engineering firms. Our leading-edge designs consider a wide range of construction methods, including:

  • Open-beam tunnel boring machines (TBMs) for hard rock tunnels

  • Shielded rock machines

  • Earth pressure balance and slurry machines for soft ground

  • Conventional underground excavation methods, such as sequential excavation methods (SEM) using mechanical means or drill-and-blast

Our Expertise

Delve Underground’s team of engineers has specialized education and practical hands-on field knowledge in the disciplines required for geo-structural engineering for underground projects. Our expertise includes engineering geology, geotechnical engineering, rock and soil mechanics, structural engineering, mechanical engineering, and construction contracting. Our culture emphasizes an understanding of the construction safety and methodology at every level. We regularly lead multidisciplinary construction management teams and provide monitoring and tunnel inspection services. Our tunnels and underground engineering expertise includes:

  • Tunnels, Caverns, Cross-Passages, and Adit Structures
  • Shaft Structures
  • Cut-and-Cover Structures
  • Temporary Works / Support of Excavation Systems
  • Pressure Tunnels
  • Tunnel Ventilation Design and Testing
  • Wine Caves and Private Underground Structures