In the Netherlands the dikes are monitored continuously to prevent the hinterland from flooding. When the situation becomes critical (because of high water levels or storms) this becomes even more intense and every possible failure needs to be reported.
If a dike, in this situation, is endangered, immediate actions need to be taken. Due to climate change this is expected in the riverine area, the IJsselmeer area and in the South-Western delta. Within a few hours (temporary) emergency measures are taken to prevent the dike from breaching, which would result in flooding of the hinterland. These measures are for example inflatable tubes, boxbarriers or the regular sandbags that are placed on top of the dike. The sandbags have proven to be a good strategy. The other measures are newly introduced and more or less only used in a test situation. The fact that they are only used in test situations gives some doubts about the reliability.
Questions that can be asked are:
· What will happen if we don’t only have high water levels, but also severe wave attack?
· Will they stay stable or will they start to float at some point?
· Is there any regulation available for these emergency measures?
· What is the influence of the water level and wave run-up on the stability of these measures?
· How well is the practical application of the different measures during storm situations?
Figure 1: Boxbarrier and Mobile Dike
During this minor you will first investigate the measures that are available, by doing some literature research. These possibilities you will model in the flume, using different scale models. After this you will give an advise on the different measures in different situations, for example in a storm situation with waves, which measure is best applicable.
For this minor we are looking for at least 2 students that are interested in the field of Coastal Engineering and want to do some experiments in the flume.
Research type: experiments in flume, modelling
Research level: minor
Prerequisite: interest in Coastal Engineering
Client: Samantha van Schaick (HZ, Delta Academy, Civil Engineering)Monitoring of soil salinity change and dynamics of the ecosystem in response to depoldering of Rammegors Research type: field and laboratory experiments, desk study and data analysis Research level: project level for Water Management, Environmental Engineering and/or Civil Engineering students Prerequisite: Driver’s License, interest in ecology, environmental hydrology, and soil science
| Start date: | februari 1, 2019 |
| End date: | juli 1, 2019 |
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| Page name | Title | Summary | |
|---|---|---|---|
| Mijn geleerde les | LL Test Hans 1 | Mijn geleerde les | Ik heb veel van deze ervaring geleerd. |