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Full-Scale Flume Experiments to Analyze the Surface Erosion Resistance of Dike Embankments Made of Dredged Materials
| 题名： | Full-Scale Flume Experiments to Analyze the Surface Erosion Resistance of Dike Embankments Made of Dredged Materials |
| 其他题名： | Allsop,W.,Kortenhaus,A.,and Morris,M.(2006)."Failure mechanisms for flood defence structures."FLOODsite Project Rep.T04-06-01,HR Wallingford Group,Wallingford,U.K. |
| 正文语种： | 英文 |
| 作者： | Stefan Cantre |
| 关键词： | Dredged material;Dike;Overflowing;Erosion resistance;Flume;Geosynthetics;Embankments |
| 摘要： | Dike embankments are usually protected using a revetment structure or a grass cover. On German sea dikes, marsh clay (North Sea) and glacial marl or bolder clay (Baltic Sea) are used mainly as erosion-resistant cover materials. The marl is usually covered with a thin soil layer if grass needs to be established. In recent years, more and more institutions have shown an interest in the use of fine-grained dredged materials, sometimes rich in organic matter, as a replacement for the standard materials. In Europe, dredged materials are legally considered as waste once they are taken out of the water body, although only a small proportion is contaminated. The embankments of dikes and levees are subject to heavy attack by water forces; thus, replacement materials need to be able to withstand these forces. Therefore, overflowing tests with turbulent, supercritical flow conditions were performed to analyze the erosion resistance of dredged materials on a full-scale dike embankment. The tests, which were based on a recent standard, show promising results, supporting different studies that state a grass cover is much more stable than usually assumed in embankment design and that the used dredged materials allow a particularly erosion-resistant grass cover to grow. The test method, however, also shows its limitations in investigating slope failure other than surface soil detachment. |
| 出版年： | 2017 |
| 论文唯一标识： | P-108Y2017V143N03009 |
| 英文栏目名称： | TECHNICAL PAPERS |
| doi： | 10.1061/(ASCE)WW.1943-5460.0000375 |
| 期刊名称： | Journal of Waterway, Port, Coastal, and Ocean Engineering |
| 拼音刊名(出版物代码)： | P-108 |
| 卷： | 143 |
| 期： | 03 |
| 页码： | 82-96 |
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