University of Twente Student Theses
2D modelling of river interventions in the Boven Waal and Pannerdensch Kanaal to restore the low discharge distribution and reduce bed degradation in the Boven Waal
Kuiper, J.F. (2024) 2D modelling of river interventions in the Boven Waal and Pannerdensch Kanaal to restore the low discharge distribution and reduce bed degradation in the Boven Waal.
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| Abstract: | Over the past century, the Waal's riverbed has degraded by 1-2 meters, particularly in the Boven Waal. This degradation has led to decreased discharge partitioning to the Pannerdensch Kanaal, due to which the minimum required discharge partitioning is not met during low flows. This study investigates interventions in both the Boven Waal and Pannerdensch Kanaal aimed at increasing low discharge partitioning to the Pannerdensch Kanaal and reducing bed degradation in the Boven Waal. The updated 2D DVR model (released in April 2024) is used for this purpose. The findings indicate that Longitudinal Training Dams (LTDs) in the Boven Waal effectively increase low discharge partitioning to the Pannerdensch Kanaal (+24–42 m³/s) by narrowing the main channel by about 65 meters. LTDs are also effective in reducing bed degradation in the Boven Waal, particularly during high flows. On the contrary, the main channel narrowing causes substantial erosion during low flows, counteracting the goal of reducing bed degradation. Additionally, summerdike removal and floodplain lowering in the Pannerdensch Kanaal are effective in maintaining the required discharge distribution during the Lobith design discharge (16,000 m³/s), but show little effect in further reducing bed degradation in the Boven Waal. |
| Item Type: | Essay (Master) |
| Clients: | Sweco, De Bilt, Netherlands Rijkswaterstaat, Netherlands |
| Faculty: | ET: Engineering Technology |
| Subject: | 56 civil engineering |
| Programme: | Civil Engineering and Management MSc (60026) |
| Link to this item: | https://purl.utwente.nl/essays/104396 |
| Export this item as: | BibTeX EndNote HTML Citation Reference Manager |
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