Shoreline Storage Tunnel Shafts and Near Surface Structures Support of Excavation-Video

Video Transcription

Video Summary

The Shoreline Storage Tunnel is part of Cleveland’s Project Clean Lake, which aims to reduce combined sewer overflows into Lake Erie by capturing wastewater for later treatment. Nicholson constructed shafts and excavation support at three sites: SST-1, the TBM launch shaft; SST-2, an intermediate drop shaft; and SST-3, the retrieval shaft. Work included diaphragm (slurry) walls, cement-bentonite ground-improvement blocks for TBM passage, and cement-bentonite panels reinforced with beams for near-surface excavations. Shaft designs adapted to local geology, using bedrock or a thick clay layer to limit water and soil inflow.

Keywords

Shoreline Storage Tunnel

Project Clean Lake

combined sewer overflow

diaphragm walls

cement-bentonite panels