Diver-Operated Sediment Excavation Tool.
Final rept. Oct 80-Sep 82,
NAVAL CIVIL ENGINEERING LAB PORT HUENEME CA
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Underwater construction tasks frequently require the removal of seafloor sand and sediment. An experimental sediment excavation tool was fabricated from commercially available and specially designed components. The diver-operated tool combined a jet-eductor, a jet nozzle, and a hydraulically powered sump pump into a jet-dredge tool to increase excavation rates, reduce reaction forces, and improve water visibility in jetting operations. A later version included multi-jet nozzles rather than a single jet nozzle. Engineering tests of the experimental tool and all candidate components were conducted. The test results are presented in this document and show that the tool is effective. The next step in development is suitable engineering design for use by Fleet units. Author
- Civil Engineering
- Pumps, Filters, Pipes, Tubing, Fittings and Valves