Design & Construction Service


TerraDol is a worldwide leading design and consulting firm focusing on tunnels and underground structures. The firm provides a full range of engineering, planning, and construction support services for tunnels, caverns, underground storage facilities, and underground stations.

  • Design of tunnels and shafts
  • TBM-driven tunnels and mechanized excavations
  • TBM type selection and advance rate prediction
  • Design of permanent linings
  • Design of support of excavation
  • Design of slope stability
  • Design of foundations
  • Geotechnical investigation and interpretation
  • Ground improvement
  • Value engineering
  • Risk analysis
  • Construction service and management
  • Blast analysis and security design of tunnels, bridges and buildings
  • Earthquake design
  • Fire resistance design