RIVERBED RETRIEVAL BOLSTERS AGGREGATES SUPPLY SOURCES
The extraction (using ladder/bucket and hydraulic/ pneumatic) and processing is described of material from the shallow (approximately 60 ft) bed of the Ohio River. The 200-ft-long, 53-ft-28d3, ladder/bucket dredge is fitted with 91 cast austnitic manganese steel buckets, connected through pins and bushings, and running around a 100-ft c-c ladder arrangement that somewhat resembles an enormous chain saw. Material excavated from the riverbed is dumped onto a 5 x 10-ft vibrating screen, and from there into a second bucket lift that raises the aggregates to the top of the dredge. In a highly satisfactory hydraulic/pneumatic dredge operation, each suction dredge includes a rotating tooth cutter head that chews up the somewhat consolidated river bottom. Details of the dredge operation are outlined. The latter approach has an advantage over the bucket/ladder process in terms of initial costs. However, it involves handling more water which has to be disposed of, and involves extra power and equipment.
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Corporate Authors:
McGraw-Hill, Incorporated
330 West 42nd Street
New York, NY United States 10036 -
Authors:
- Higgins, L R
- Publication Date: 1976-1
Media Info
- Pagination: p. 28-31
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Serial:
- Construction Methods and Equipment
- Volume: 58
- Issue Number: 1
- Publisher: McGraw-Hill, Incorporated
Subject/Index Terms
- TRT Terms: Aggregates by source; Chemical analysis; Costs; Cutting tools; Dredging; Equipment; Hydraulic equipment; Pneumatic equipment; Resource extraction; Screens; Streambeds
- Uncontrolled Terms: Aggregate sources; Extraction (Chemistry)
- Old TRIS Terms: Buckets; Cutters; Pneumatic devices; River beds; Vibrating screens
- Subject Areas: Finance; Geotechnology; Highways; Marine Transportation;
Filing Info
- Accession Number: 00132906
- Record Type: Publication
- Files: TRIS
- Created Date: Jun 5 1976 12:00AM