Technical Assessment of River Training Impact on the Raba River Bed Stability on the Selected Longitudinal Section

• Autorzy: Łapuszek Marta , Wolak Andrzej

Identyfikatory

DOI

10.12911/22998993/112496

• Języki publikacji: EN

Abstrakty

EN

Short assessment and prediction of movement of selected Raba river sections in Southern Poland, using the existing, historical sources is presented in this paper. It was done to the most practicable extent, with regard to the river training structures as groynes and revetments stability structures. The old maps (almost non-existent) and/or aerial photographs of the selected areas and the archival projects of technical Raba river channel regulation were complemented with specific stream power and bed shear stress. In the 8.2 km long study area, four specific sections were studied in the current paper. The general trends over the last fifty years included artificial narrowing of the active channel width with uniform riverbed longitudinal slope. The current studies lead to the conclusion that the narrowed river channel tend to restoring its previous state. However, throughout each analyzed section, the channel-forming processes are varied, mostly related to restoring the local natural longitudinal slope. In Section-1, the process of sediment deposition was observed and it continues till now. In Section-2, the channel-forming processes were carried out with high intensity with tendency to rebuild its previous braided course. Currently, this tendency is continuing. The third Section seems to be the most stable after the river training works. In Section-4 the process of high erosion, especially of the left bank, is observed. The results of the analysis lead to the conclusion that more comprehensive investigation is needed of the whole 8.2-km long reach to assess the river state.

Słowa kluczowe

EN

river training; river bed stability; river restoration

• Wydawca: Polskie Towarzystwo Inżynierii Ekologicznej ; Lublin University of Technology
• Czasopismo: Journal of Ecological Engineering
• Rocznik: 2019
• Tom: Vol. 20, nr 9
• Strony: 145--155
• Opis fizyczny: Bibliogr. 30 poz., rys., tab.

Twórcy

autor

Łapuszek Marta

• Institute of Water Engineering and Water Management, Cracow University of Technology, ul. Warszawska 24, 31-155 Kraków, Poland

autor

Wolak Andrzej

• Institute of Water Engineering and Water Management, Cracow University of Technology, ul. Warszawska 24, 31-155 Kraków, Poland

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