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Environmental disturbance characterised through spillage from underwater dredging/mining cutting
Citation
Sarkar, MK and Bose, N and Chai, S and Dowling, K, Environmental disturbance characterised through spillage from underwater dredging/mining cutting, Proceedings of the 34th International Geological Congress 2012, 5-10 Aug 2012, Brisbane, QLD, Australia, pp. CD-Rom. ISBN 9780646578002 (2012) [Conference Extract]
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Abstract
During underwater dredging and mining operations most cutting equipment experiences spillage from the cutter and suction configurations. The environmental impacts of this spillage can be severe, causing change and often degradation in habitat for both benthic and mid water species. While spillage causes an increase in turbidity levels it can also release metals and other contaminants into the water column. These may be components of a mining ore or large deposits lying at the bottom of harbours that are released during dredging. This paper reports on spillage tests, using turbidity as an indicator, in a specially designed tank with a transverse axis dredging/mining cutter, suction cowl and pump systems. The paper concludes on the levels of increased turbidity relative to the cutter systems and highlights the influence of the cowling design in reducing spillage levels. A description is given of future tests with a range of dredging/mining cutters.
Item Details
Item Type: | Conference Extract |
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Research Division: | Engineering |
Research Group: | Maritime engineering |
Research Field: | Ocean engineering |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in engineering |
UTAS Author: | Sarkar, MK (Dr Mridul Sarkar) |
UTAS Author: | Bose, N (Professor Neil Bose) |
UTAS Author: | Chai, S (Professor Shuhong Chai) |
ID Code: | 79314 |
Year Published: | 2012 |
Deposited By: | NC Maritime Engineering and Hydrodynamics |
Deposited On: | 2012-08-31 |
Last Modified: | 2012-08-31 |
Downloads: | 0 |
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