Wyniki wyszukiwania - BazTech

1

Zator na Wiśle w rejonie Płocka w lutym 2021 r.

Pawłowski Bogusław, Kolerski Tomasz

Gospodarka Wodna

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2022

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Nr 5

4--8

PL

Powodzie zimowe, związane z zatorami lodowymi, są coraz częściej traktowane jako zjawisko rzadkie lub całkowicie wyeliminowane. Opisana w artykule sytuacja pokazała, że zator nadal może prowadzić do poważnego zagrożenia powodziowego, bardzo trudnego do zneutralizowania. Omówiono sytuację hydrologiczną zimą 2021 r. oraz przyczyny gwałtownego wzrostu ilości lodu w korycie Wisły w rejonie Płocka. Przedstawiono również wyniki pomiaru wypełniania koryta rzeki lodem. Prześledzono proces formowania się zatoru, jego konsekwencje oraz akcję lodołamania. Zwrócono uwagę na postępujące wypłycanie się zbiornika.

EN

Winter floods related to ice jams are increasingly often treated as rare or definitely eliminated phenomena. Situation described in the article indicates that jams may still constitute a serious flood threat, which is very difficult to neutralise. The article discusses the hydrological situation in winter 2021 and the reasons behind sudden accumulation of ice in the Vistula riverbed in the Płock region. It also presents the results of measurement of the riverbed filling with ice. The authors described the jam forming process, its consequences and the ice-breaking action. They also pointed out to the progressing reservoir shallowing.

2

Hydrological responses to large-scale changes in land cover of river watershed: Review

Muhammed Hadi H., Mustafa Andam M., Kolerski Tomasz

Journal of Water and Land Development

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2021

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no. 50

108--121

EN

Despite many studies on the hydrological responses to forest cover changes in micro and mesoscale watersheds, the hydrological responses to forest cover alterations and associated mechanisms through the large spatial scale of the river watershed have not been comprehensively perceived. This paper thus reviews a wide range of available scientific evidence concerning the impacts exerted by the forest removal on precipitation, water yield, stream flow, and flow regimes. It is concluded that there is no statistical correlation between forest cover and precipitation and water yield at the micro and mesoscale. In contrast, there is a relative correlation coefficient (r = 0.77, p < 0.05) between forest cover and water yield at large scales (>1000 km2). These findings help our understanding of the hydrological response to forest disturbance at large and regional scale and provide a scientific perception to future watershed management in the context of human activities and natural hazards.

3

Kształcenie kadr dla gospodarki wodnej na Wydziale Inżynierii Lądowej i Środowiska Politechniki Gdańskiej

Kolerski Tomasz

Gospodarka Wodna

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2021

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Nr 8

5--7

4

Hydrodynamic model of the new waterway through the Vistula Spit

Szydłowski Michał, Kolerski Tomasz

Polish Maritime Research

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2020

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nr 3

159--167

EN

The decision to build a new waterway (strait) in the Polish part of the Vistula Spit was made in 2017. The new connection between the Gulf of Gdańsk and the Vistula Lagoon is planned as an artificial navigable channel with a lock and a small port. During storm surges and wind tides in the gulf or in the lagoon, sluicing will be required for vessels to tackle the Vistula Spit. This procedure does not require significant water flow through the channel in normal conditions. However, in the case of a lock failure or in the case of controlled opening of the gate to increase water exchange in the lagoon or to reduce flood risk in the Vistula Lagoon, high flow rates may occur in the navigable channel and in the neighboring port basin. In order to inves-tigate the hydraulic conditions in such extraordinary situations, numerical modeling of the hydrodynamics during water damming in the gulf or in the lagoon is performed. To analyze the hydrodynamics of the artificial connection between the sea and the lagoon during periods of high water stages, mathematical modeling is required. This paper presents the shallow water equations (SWE) model adapted to simulate the flow through the port basin and the navigable channel. The calcula-tions allowed the relation between the water head and the capacity of the navigable channel to be found, as well as to analyze circulations which may occur in the port basin.

5

Modelowanie matematyczne transportu lodu w rejonie projektowanego Stopnia Wodnego Siarzewo

Kolerski Tomasz, Wrzosek Krzysztof, Sobiesak Przemysław, Polak Krzysztof

Gospodarka Wodna

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2020

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Nr 10

31--37

PL

Przedstawiono wpływ planowanego stopnia Siarzewo na Wiśle na dynamikę lodu w obszarze powyżej i poniżej stopnia. Do tego celu zaimplementowano model matematyczny i przeprowadzono symulacje numeryczne dla różnych scenariuszy. Obliczenia służyły do wyznaczeniu trasy spływu lodu przez zbiornik i poniżej zbiornika oraz sił z jakimi lód będzie oddziaływał na brzegi i dno rzeki oraz projektowane na zbiorniku wyspy. Badaniami objęto odcinek Wisły pomiędzy istniejącym stopniem wodnym Włocławek (km 674,850) a km 715.

EN

The article presents the impact of the planned Siarzewo dam on the ice dynamics upstream and downstream of the barrage. Mathematical model was implemented to the study area and the results of numerical simulations for different scenarios were used to achieve the goal. The calculations were used to determine the ice flow through the reservoir and downstream of the dam. The forces caused by the dynamic ice impact on river banks, riverbed and the shore of islands planned on the reservoir were also calculated. The research covers the Vistula section between the Im 678,850 (the existing Włocławek dam) and km 715,000.