Construction of an Underground Niche for TBM Repair and Permeation Grouting in Flooded Shaft—Ship Canal Water Quality Project (SCWQP) - NAT2024
- Organization:
- Society for Mining, Metallurgy & Exploration
- Pages:
- 10
- File Size:
- 694 KB
- Publication Date:
- Jun 23, 2024
Abstract
The Ship Canal Water Quality Project includes a 2.7-mile, 18-ft and 10-in internal-diameter
tunnel that extends from Ballard to Wallingford, two popular neighborhoods in the West of Seattle. During
the TBM Main drive a 12' × 12' boulder with variable strength up to 47,000psi was encountered resulting on
signicant damages to the Cutter ead. The rst part of this paper describes the design and construction of
an underground recess in front of the TBM to create a safe working environment for the TBM repairs. The
second part describes an injection campaign performed to seal an unforeseen water inow appeared during the
excavation of the 11 Avenue Diversion Structure.
Citation
APA: (2024) Construction of an Underground Niche for TBM Repair and Permeation Grouting in Flooded Shaft—Ship Canal Water Quality Project (SCWQP) - NAT2024
MLA: Construction of an Underground Niche for TBM Repair and Permeation Grouting in Flooded Shaft—Ship Canal Water Quality Project (SCWQP) - NAT2024. Society for Mining, Metallurgy & Exploration, 2024.