Open water disposal of barged sediment
Coastal activities, like land reclamation and dredging, usually involve open water sediment disposal, and they are being conducted intensively around the world. The near-source transport of disposed sediment is directly related to the method that the sediments are released, so it is essential to con...
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
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2017
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| Online Access: | http://hdl.handle.net/10356/69553 |
| _version_ | 1811697464084791296 |
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| author | Er, Jenn Wei |
| author2 | Law Wing-Keung, Adrian |
| author_facet | Law Wing-Keung, Adrian Er, Jenn Wei |
| author_sort | Er, Jenn Wei |
| collection | NTU |
| description | Coastal activities, like land reclamation and dredging, usually involve open water sediment disposal, and they are being conducted intensively around the world. The near-source transport of disposed sediment is directly related to the method that the sediments are released, so it is essential to consider realistic physical conditions in order to improve engineering and environmental assessments. The present study focused on the release of sediment from bottom-split barges, which are commonly deployed to transport and dispose sediments, due to their large carrying capacity. A model, BSDM (Barged Sediment Disposal Model) was first developed to assess the behavior of sediment clouds due to barge disposal in the convective descent phase. Upon impact on the seabed, the intrusion of the collapsed cloud was then investigated as a gravity current, and a modified Box-Model was developed to simulate the motion. The last part of the study investigated the formation of a new regime, within which sediments descend through the water column as sediment clumps. |
| first_indexed | 2024-10-01T07:55:40Z |
| format | Thesis |
| id | ntu-10356/69553 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:55:40Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | ntu-10356/695532023-03-03T19:35:44Z Open water disposal of barged sediment Er, Jenn Wei Law Wing-Keung, Adrian School of Civil and Environmental Engineering Singapore-MIT Alliance for Research and Technology Singapore-MIT Alliance Programme E. Eric Adams DRNTU::Engineering::Civil engineering::Water resources Coastal activities, like land reclamation and dredging, usually involve open water sediment disposal, and they are being conducted intensively around the world. The near-source transport of disposed sediment is directly related to the method that the sediments are released, so it is essential to consider realistic physical conditions in order to improve engineering and environmental assessments. The present study focused on the release of sediment from bottom-split barges, which are commonly deployed to transport and dispose sediments, due to their large carrying capacity. A model, BSDM (Barged Sediment Disposal Model) was first developed to assess the behavior of sediment clouds due to barge disposal in the convective descent phase. Upon impact on the seabed, the intrusion of the collapsed cloud was then investigated as a gravity current, and a modified Box-Model was developed to simulate the motion. The last part of the study investigated the formation of a new regime, within which sediments descend through the water column as sediment clumps. Doctor of Philosophy (CEE) 2017-02-09T05:50:49Z 2017-02-09T05:50:49Z 2017 Thesis Er, J. W. (2017). Open water disposal of barged sediment. Doctoral thesis, Nanyang Technological University, Singapore. http://hdl.handle.net/10356/69553 10.32657/10356/69553 en 193 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Civil engineering::Water resources Er, Jenn Wei Open water disposal of barged sediment |
| title | Open water disposal of barged sediment |
| title_full | Open water disposal of barged sediment |
| title_fullStr | Open water disposal of barged sediment |
| title_full_unstemmed | Open water disposal of barged sediment |
| title_short | Open water disposal of barged sediment |
| title_sort | open water disposal of barged sediment |
| topic | DRNTU::Engineering::Civil engineering::Water resources |
| url | http://hdl.handle.net/10356/69553 |
| work_keys_str_mv | AT erjennwei openwaterdisposalofbargedsediment |