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Aug 30, 2024
Underwater Tunnel Rehabilitation with Patented Diver Operated Vehicle
Authors: Shawn Drobny, P.E. [email protected], and Liam O’Brien [email protected]Author Affiliations
Publication: Pipelines 2024
ABSTRACT
Safety, quality, and value were key drivers for the solutions-oriented project team when evaluating the rehabilitation of two 70–90-year-old concrete lined raw water tunnels experiencing distress and cracking. An “in-the-wet repair” solution, without interruption to the water supply, was developed to re-line the tunnels with custom stainless-steel inserts to extend the service life of the facility. Assembled by divers at the invert of the tunnel, the liner inserts would be transported over 700 ft down the tunnel for installation by a diver-operated transporter vehicle, integrating an electric over hydraulic power system. The transporter has two onboard underwater monitors and eight LED lights allowing divers to navigate the 25-ft-long transporter down the tunnel with a load capacity of just over 9,000 pounds.
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Published online: Aug 30, 2024
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ASCE Technical Topics:
- Construction engineering
- Construction methods
- Environmental engineering
- Geotechnical engineering
- Highway transportation
- Infrastructure
- Linings
- Rehabilitation
- Structural engineering
- Structures (by type)
- Transportation engineering
- Tunnels
- Underwater structures
- Vehicles
- Water and water resources
- Water management
- Water quality
- Water supply
- Water supply systems
- Water treatment
- Water tunnels
Authors
Affiliations
1Lead Engineer, Ballard Marine Construction, LLC. Email: [email protected]
2Business Development–Robotics and Survey Division, Ballard Marine Construction, LLC. Email: [email protected]
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.