University of Twente Student Theses
Analysis of the Phreatic Line of Various Types of Primary Flood Defences : Is the Phreatic Line Schematisation too conservative?
Denkers, A.J. (2021) Analysis of the Phreatic Line of Various Types of Primary Flood Defences : Is the Phreatic Line Schematisation too conservative?
|
PDF
7MB |
| Abstract: | The Dutch primary flood defences protect the land from the sea and the large rivers in the Netherlands. The waterboard and the Ministry of Infrastructure and Environment are in charge to guarantee the protection of the hinterland from future flooding. The Dutch waterboards are obliged to assess whether the primary flood defences meet the given legal safety standards once every twelve years. Part of this assessment is to check the stability and safety of the flood defences against the given safety standards. The important factor for the inner slope macro stability of the dike is the phreatic line defined as the groundwater table in the dike. This phreatic line depends on different factors such as the hydraulic loads, pore pressures and other hydrological processes. When there are no groundwater measurements available to determine the height of the phreatic line, the waterboards have to rely on a conservative schematisation of the phreatic line provided in the Technische Rapport Waterspanningen bij Dijklichamen and the Waternet Creator. This study is performed in collaboration with the waterboard Drents Overijsselse Delta to answer the main research question: can the current phreatic line schematisation be improved to provide a more realistic safety factor for the inner macro stability? |
| Item Type: | Essay (Bachelor) |
| Faculty: | ET: Engineering Technology |
| Programme: | Civil Engineering BSc (56952) |
| Link to this item: | https://purl.utwente.nl/essays/85826 |
| Export this item as: | BibTeX EndNote HTML Citation Reference Manager |
Show download statistics for this publication
Show download statistics for this publicationRepository Staff Only: item control page