MICROTUNNELING BETWEEN PILES FOR PIPELINE REPLACEMENT
Abstract:The presence of piles supporting primary clarifier basins, along with the risk of settlementinduced damage, led to the use of microtunneling techniques to replace primary sludge drain pipelines at the Jones Island Wastewater Treatment Plant in Milwaukee, Wisconsin. To avoid the clarifier support piles a Soltau RVS 80 microtunnel boring machine was used to replace the 6-inch-diameter pipelines, which were installed 30 feet below the surface. The Soltau boring machine utilized an innovative laser-guided, steerable pilot tube to establish a pilot alignment between the support piles. When obstructions causing refusal conditions were encountered, the steerable pilot tube was retracted and the pilot alignment was adjusted. The pipeline was then jacked in place behind an auger that followed the pilot tube alignment. This installation method minimized the risk of damaging the support piles and significantly contributed to the success of the pipeline replacements.
Document Type: Research Article
Publication date: January 1, 2002
More about this publication?
- Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed. WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.
- Subscribe to this Title
- Membership Information
- About WEF Proceedings
- WEFTEC Conference Information
- Ingenta Connect is not responsible for the content or availability of external websites