Author: David P. HammerPublisher:
ISBN:
Category : Drainage
Languages : en
Pages : 112
Book Description
Evaluation of Underdrainage Techniques for the Densification of Fine-grained Dredged Material
Author: David P. HammerPublisher:
ISBN:
Category : Drainage
Languages : en
Pages : 112
Book Description
Evaluation of Underdrainage Techniques for the Densification of Fine-Grained Dredged Material
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 108
Book Description
The result of a large-scale field experiment to evaluate the dewateirng/densifying of fine-grained dredged material with underdrainage techniques is described. The techniques evaluated were: gravity underdrainage, partial vacuum in an underdrainage layer, seepage consolidation, and seepage consolidation with a partial vacuum in the underdrainage layer. The experiment was conducted using five test sections having 30- x 30-ft bottom areas and 1v on 2H sideslopes. One section was used for each of the four techniques evaluated and a control section was not treated. Settlement, pore pressure, water content, and vane shear measurements were taken to provide a basis of evaluation. Initially, a 6-ft nominal thickness lift of dredged material was used; then, after one year, a second 6-ft lift was added. The experiment ran for approximately two years. All of the techniques evaluated produced more densification than did the test section containing untreated material. Of the techniques evaluated the partial vacuum in an underdrainage layer was the most effective. This was true with both lifts of dredged material tested but was considerably more pronounced with the first lift than the second.
An Evaluation of Progressive Trenching as a Technique for Dewatering Fine-grained Dredged Material
Author: Michael R. PalermoPublisher:
ISBN:
Category : Dredging
Languages : en
Pages : 186
Book Description
The results of a study conducted within a confined disposal area concerning the effects of progressive trenching on dredged material dewatering and drying are documented. The study consisted of an initial field and laboratory testing program, construction of a surface drainage system within the disposal area using a progressive trenching approach, evaluation of trenching equipment, and a field instrumentation and monitoring program. Effects of the progressive trenching efforts were evaluated by monitoring dredged material surface elevations and dredged material groundwater elevations within the study area. Field data indicated that the surface drainage system was effective in lowering the dredged material groundwater table. An average surface settlement of approximately 0.75 ft was achieved throughout the study area. Economic evaluations indicated that progressive trenching operations were economically feasible with both comparatively low unit cost and favorable benefit/cost ratio.
Selected Water Resources Abstracts
Author: Solid Residuals Management at Centralized Vehicle Wash Facilities
Author: Trudy J. OlinPublisher:
ISBN:
Category : Sedimentation and deposition
Languages : en
Pages : 72
Book Description
Technical Abstract Bulletin
Author: Development of Procedures for Selecting and Designing Reusable Dredged Material Disposal Sites
Author: Publisher:
ISBN:
Category : Waste disposal in the ground
Languages : en
Pages : 352
Book Description
Indiana Harbor and Canal Maintenance Dredging and Disposal Activities, Comprehensive Management Plan
Author: List of Publications of the U.S. Army Engineer Waterways Experiment Station
Author: U.S. Army Engineer Waterways Experiment StationPublisher:
ISBN:
Category : Coastal engineering
Languages : en
Pages : 408
Book Description
Guidelines for Dewatering/densifying Confined Dredged Material
Author: T. Allan HaliburtonPublisher:
ISBN:
Category : Dredging
Languages : en
Pages : 138
Book Description