1. ERDC Knowledge Core
  2. Engineer Research and Development Center (ERDC)
  3. Coastal and Hydraulics Laboratory (CHL) - (before 9/1981 - present)
  4. Publication
  5. Technical Report
Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/36997
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dc.contributor.authorPriestas, Anthony M.-
dc.contributor.authorSmith, S. Jarrell-
dc.contributor.authorBrutsche, Katherine E.-
dc.date.accessioned2020-06-12T19:23:36Z-
dc.date.available2020-06-12T19:23:36Z-
dc.date.issued2020-05-
dc.identifier.govdocERDC/CHL TR-20-8-
dc.identifier.urihttps://hdl.handle.net/11681/36997-
dc.identifier.urihttp://dx.doi.org/10.21079/11681/36997-
dc.descriptionTechnical Report-
dc.description.abstractDredged sediment placed on beaches or nearshore environments is customarily evaluated for compatibility with the native beach sediment to avoid unintended impacts to economic, environmental, or recreational resources. Consequently, some state regulatory authorities establish limits upon the fine-grained content for sediment designated for placement on certain beaches and nearshore environments. Hopper dredging operations for beach and nearshore placement typically include periods of overflow, which is recognized to produce some degree of separation between the size fractions of the dredged sediment. The degree of separation and the controlling factors of separation are presently poorly known and are the subject of this research. This report provides a conceptual model of the hopper dredging and placement processes, including the relevant processes associated with hopper dredge-associated sediment dynamics, generation and transport of the overflow sediment plume, and sediment winnowing at the beach outflow. Prior research is described, and knowledge gaps are identified. Finally, a research plan to validate prior research and to address knowledge gaps is presented. An annotated bibliography of relevant literature is given in an appendix. Documentation of the planned research presented herein will appear in future publications associated with this study.en_US
dc.description.sponsorshipRegional Sediment Management Program (U.S.)en_US
dc.description.tableofcontentsContents Abstract .................................................................................................................................... ii Figures...................................................................................................................................... iv Preface ...................................................................................................................................... v 1 Introduction ...................................................................................................................... 1 1.1 Background ........................................................................................................ 1 1.2 Objective ............................................................................................................ 2 1.3 Approach ............................................................................................................ 3 2 Conceptual Model ............................................................................................................ 4 2.1 Separation of sediment by hopper dredging ................................................... 9 2.1.1 Tank sedimentation .................................................................................................... 9 2.1.2 Models of tank sedimentation and separation ....................................................... 10 2.2 Separation of sediment by pipeline outfall and beach processes ...............15 2.2.1 Pipeline outfall........................................................................................................... 16 2.2.2 Separation of sediment due to nearshore and beach processes .......................... 17 2.3 Transport processes in TSHD overflow plumes ............................................ 18 2.3.1 Dynamic plume ......................................................................................................... 19 2.3.2 Passive plume ........................................................................................................... 19 2.3.3 Modeling of the overflow plume ............................................................................... 20 2.4 Sampling methods .......................................................................................... 22 2.4.1 Bed material sampling .............................................................................................. 23 2.4.2 Overflow weir sampling ............................................................................................. 24 2.5 Uncertainty in quantifying losses................................................................... 26 3 Conclusions and Recommendations ........................................................................... 27 3.1 Conclusions ...................................................................................................... 27 3.2 Proposed research ......................................................................................... 28 3.3 Conceptual model and literature review ....................................................... 28 3.4 Sampling methods .......................................................................................... 28 3.5 Field measurements of sediment sorting during dredging operations ................................................................................................................. 29 References ............................................................................................................................. 30 Appendix: Annotated Bibliography of Relevant References by Topic ............................ 35 Unit Conversion Factors ....................................................................................................... 44 Acronyms and Abbreviations ............................................................................................... 45 Report Documentation Page-
dc.format.extent53 pages / 1.26 MB-
dc.format.mediumPDF/A-
dc.language.isoen_USen_US
dc.publisherCoastal and Hydraulics Laboratory (U.S.)en_US
dc.publisherEngineer Research and Development Center (U.S.)-
dc.relation.ispartofseriesTechnical Report (Engineer Research and Development Center (U.S.));no. ERDC/CHL TR-20-8-
dc.rightsApproved for Public Release; Distribution is Unlimited-
dc.sourceThis Digital Resource was created in Microsoft Word and Adobe Acrobat-
dc.subjectBeach erosionen_US
dc.subjectDredgesen_US
dc.subjectDredgingen_US
dc.subjectParticle size determinationen_US
dc.subjectSedimentation and depositionen_US
dc.subjectSediment transporten_US
dc.subjectShorelinesen_US
dc.titleSediment sorting by hopper dredging and pump-out operations : conceptual model and literature reviewen_US
dc.typeReporten_US
Appears in Collections:Technical Report

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