Download or read book Evaluation of Loading and Dredged Material Overflow from Mechanically Filled Hopper Barges in Mobile Bay Alabama written by Michael R. Palermo and published by . This book was released on 1990 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Loading and Dredged Material Overflow from Mechanically Filled Hopper Barges in Mobile Bay Alabama written by ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB. and published by . This book was released on 1990 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: Authorizing legislation for the deepening of navigation channels in Mobile Bay specifies that the new work dredged material and material from future maintenance dredging must be placed in an approved open-water disposal site in the Gulf of Mexico. Large mechanical dredges with clamshell buckets are being used for the new-work dredging. Hopper barges are loaded with the dredged material and transported by tug to the disposal site. Mechanical dredging is also the most likely technique for future maintenance. The economic loading of the hopper barges and the potential environmental impact associated with barge overflow during loading are important issues. A field study was therefore conducted to give site-specific information on the loading gains achieved by overflow and the characteristics of the overflow for conditions in Mobile Bay. Keywords: Barge scow, Clamshell, Dredged material, Dredging, Waste, Mobile Bay, Alabama, Overflow. (js).
Download or read book Engineering Design and Environmental Assessment of Dredged Material Overflow from Hydraulically Filled Hopper Barges in Mobile Bay Alabama written by and published by . This book was released on 1990 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dredging Operations Technical Support Program Engineering Design and Environmental Assessment of Dredged Material Overflow from Hydraulically Filled Hopper Barges in Mobile Bay Alabama written by and published by . This book was released on 1990 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Barge overflow was investigated as a cost-effective option for future dredging needs in Mobile Bay, Alabama. Tests of hopper barge loading characteristics with overflow operations were conducted in Mobile Bay. In theory, overflow would allow denser materials to settle within the barge while less dense materials were shunted overboard. Increased density of barge-held materials would then translate to cost savings via a reduced requirement for transport to a distant approved disposal site. Thus, one major objective of the study was an engineering evaluation of equipment performance during the tests. A second major objective was to obtain field data for an assessment of the environmental consequences of overflow. In support of both objectives, modeling studies were performed to simulate overflows that would be associated with routine dredging operations. Eight separate tests were conducted. Three tests occurred at a site in lower Mobile Bay, and five tests at an upper bay site. Three tests (one lower bay, two upper bay) involved dredging in maintenance materials, and five tests (two lower bay, three upper bay) involved new work or deepening materials.
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Clamshell Dredging and Barge Overflow Military Ocean Terminal written by Michael R. Palermo and published by . This book was released on 1990 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Engineering and Design written by United States. Army. Corps of Engineers and published by . This book was released on 1983 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dredging Research written by and published by . This book was released on 1988 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1993 with total page 1786 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Providence River and Harbor Maintenance Dredging Project written by and published by . This book was released on 2001 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book List of Publications of the U S Army Engineer Waterways Experiment Station written by U.S. Army Engineer Waterways Experiment Station and published by . This book was released on 1993 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Specialty Conference on Dredging and Its Environmental Effects Mobile Alabama January 26 28 1976 written by Peter A. Krenkel and published by . This book was released on 1976 with total page 1054 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on with total page 1308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Practices and Problems Associated with Economic Loading and Overflow of Dredge Hoppers and Scows written by Michael R. Palermo and published by . This book was released on 1990 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dredging Research Program Laboratory Testing of Methods to Increase Hopper Dredge Payloads Model Hopper Bin Facility and Centrifugal Solids Concentrator written by and published by . This book was released on 1992 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is common practice to fill beyond overflow on dredge hoppers and scows to achieve load gains. However, some of the US Army Corps of Engineers Districts do not permit overflow due to actual or perceived environmental or economic reasons. It is generally not known whether overflowing is beneficial in increasing the hopper payload in fine-grained sediments (silt and clay size), although some studies have indicated a minimal increase in hopper loads when filled to overflowing. Under the Dredging Research Program (DRP) Work Unit, Technology for Monitoring and Increasing Dredge Payload for Fine-Grained Sediments, several experimental methods were investigated to determine their effect on increasing the payload of fine-grained dredged material. Several devices were tested in a scale model hopper constructed at the US Army Engineer Waterways Experiment Station Hydraulics Laboratory. These devices included three types of hydrocyclones (centrifugal separators), various diffuser designs, and different arrays of internally mounted inclined plates. A solids concentrator device was also evaluated for increasing the load of fine sediments in the model hopper. This report presents the description and method of the testing programs and the study findings. The inclined plate and solids concentrator devices demonstrated some level of success when tested with silt-sized materials (particle size 10 to 63 microns)., The inclined plate method was the most successful for increasing payload in the model hopper; however, prototype use of this technique could substantially increase the weight of a hopper dredge unless a lightweight version is developed. Diffusers, Hydrocyclones, Overflow, Fine- grained sediment, Inclined plates, Plates, Hopper dredges, Load gain.
Download or read book A Study of the Effects of Maintenance Dredging in Mobile Bay Alabama written by C. Everett Brett and published by . This book was released on 1975 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
