Tunnel & Sewers
Dawn Underground Engineering Inc. (DUE) provides tunnel and shaft design and geotechnical engineering services to owners, utility authorities, municipalities, contractors, architects and engineers. Projects range from excavation support designs to deep-tunnel projects in soil and rock. We are experienced in development of Geotechnical Baseline Reports (GBR) for rock, soil, mixed face, microtunneling, pipe jacking and box tunnel projects.
DUE has conducted subsurface investigation program assessments and designs for projects ranging from pipe jacking to complicated underground structures.
DUE has conducted subsurface investigation program assessments and designs for projects ranging from pipe jacking to complicated underground structures.
DUE tunnel and geotechnical services include the following:
- Subsurface investigation programs
- Geotechnical tunnel route feasibility assessment
- Ground improvement designs such as grouting, freezing and compressed air
- Tunnel Boring Machine (TBM) selection and performance estimates
- Design underground structure support systems
- Design of tunnel linings, shafts and pits
- Design of retaining walls & earth reinforcement systems
- Stabilizing of slopes and tunnel portals
- Foundation analysis and design
- Pile foundation analysis, design, testing, and inspection
- Reports preparation for construction contract documentation
- Geotechnical Data Reports
- Geotechnical Baseline Reports
- Groundwater monitoring
- Pump tests
- Instrumentation monitoring
- Post construction monitoring
- Hydraulic design of drop shafts for sewers in tunnel
- Excavation stability analysis
- Computer modeling of soil-structure interaction for tunnels and shafts
- Tunnel and shaft stability analysis