Nauka Przyroda Technologie

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Janusz Urbański, Piotr Siwicki
The effectiveness of modernized reservoir spillway functioning on Młynówka river in Górowo Iławeckie
Summary.

Reservoir dams on the Młynówka river in Górowo Iławeckie were largely destroyed after flood in February 2000. In 2011 the reconstruction and modernization of the dams was pursued in order to remove the damages caused by that catastrophic flood. Among others, the reinforced concrete spillway was constructed with a tower-type crest and a bottom sluice. In this paper, hydraulic calculations were performed and further analysed to estimate the effectiveness of the modernized spillway. Inventory works and basic field measurements were carried on in necessary scope for the analysis. Hydraulic conditions of flow in channel downstream of the dam were also examined. Discharge capacity of the sluice and the spillway was calculated and helped to estimate hydraulic conditions for flood flows. The maximum capacity of a single inlet to the drain at normal level of damming (NLD) is 4.68 m3·s-1, what represents about 45% of the design flow. Tower-type crest made on the ordinate NLD = 128.60 m a.s.l., provides suitable transition of design flood (Qm) and control flood (Qk), maintaining a safe rising of crest crown for the buildings of safe grade four. The riverbed of Młynówka down the concrete spillway has been rebuilt at a distance of 830 m and six stone riffle, each with a height of 0.30 m, has been build. As a result of the reservoir modernization, the flood protection has been improved in the adjacent areas.

Key words: retention dam reservoir, spillway, flow capacity
PDFFull text available in Polish in Adobe Acrobat format:
http://www.npt.up-poznan.net/tom8/zeszyt2/art_24.pdf

For citation:

MLA Urbański, Janusz, and Piotr Siwicki. "Skuteczność działania zmodernizowanych urządzeń upustowych zbiornika na rzece Młynówce w Górowie Iławeckim." Nauka Przyr. Technol. 8.2 (2014): #24.
APA Janusz Urbański, Piotr Siwicki (2014). Skuteczność działania zmodernizowanych urządzeń upustowych zbiornika na rzece Młynówce w Górowie Iławeckim. Nauka Przyr. Technol. 8 (2), #24
ISO 690 URBAńSKI, Janusz, SIWICKI, Piotr. Skuteczność działania zmodernizowanych urządzeń upustowych zbiornika na rzece Młynówce w Górowie Iławeckim. Nauka Przyr. Technol., 2014, 8.2: #24.
Corresponding address:
Janusz Urbański
Katedra Inżynierii Wodnej
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie
ul. Nowoursynowska 159
02-776 Warszawa
Poland
e-mail: janusz_urbanski@sggw.pl
Accepted for print: 3.04.2014