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Issue 16 (4) 2017 pp. 217-232

Zbigniew Walczak1, Zbigniew Sroka1, Wojciech Tschuschke1, Paweł Stefanek 2, Krzysztof Wrzosek3

1 Uniwersytet Przyrodniczy w Poznaniu
2
Politechnika Warszawska
3
KGHM Polska Miedź SA

REDUCTION OF THE WARTA RIVER FLOW CAUSED BY SEEPAGE FROM RIVER BED, DURING ADDITIONAL DISCHARGE FROM JEZIORSKO RESERVOIR

Keywords: seepage, seepage from river bed, FEM, Hydrus, time variable boundary conditions.
Abstract:

Reduction of discharge from Jeziorsko reservoir supplementing flow in Warta River was analysed. Reduction was caused by seepage from river bed along the stretch of 80 km. Twelve hypothetical waves were analyzed according to the size and duration of the discharge. The parameters determining the seepage properties of the soil were determined on the basis of in situ test and field measurements carried out on the area of Majdany polder, in the cross section located in the half the length of analyzed stretch. Cumulative seepage flow and unit discharge through the river bed were determined. For all simulation, losses were compared with discharge volumes from Jeziorsko reservoir. It has been shown that the losses at the analysed river stretch are not large and reach a maximum of 1.3% of the discharge volume. The percentage decreases with increasing discharge volume and its duration. The solutions were obtained using FEM implemented in the Hydrus computer software package, which allows analysis of unsteady seepage flow with time-varying boundary conditions

pub/16_4_217.pdf Full text available in in Adobe Acrobat format:
http://www.formatiocircumiectus.actapol.net/volume16/issue4/16_4_217.pdf

DOI: 10.15576/ASP.FC/2017.16.4.217

For citation:

MLA Walczak, Zbigniew, et al. "REDUCTION OF THE WARTA RIVER FLOW CAUSED BY SEEPAGE FROM RIVER BED, DURING ADDITIONAL DISCHARGE FROM JEZIORSKO RESERVOIR." Acta Sci.Pol. Form. Cir. 16.4 (2017): 217-232. http://dx.doi.org/10.15576/ASP.FC/2017.16.4.217
APA (2017). . Acta Sci.Pol. Form. Cir. 16 (4), 217-232 http://dx.doi.org/10.15576/ASP.FC/2017.16.4.217
ISO 690 WALCZAK, Zbigniew, et al. REDUCTION OF THE WARTA RIVER FLOW CAUSED BY SEEPAGE FROM RIVER BED, DURING ADDITIONAL DISCHARGE FROM JEZIORSKO RESERVOIR. Acta Sci.Pol. Form. Cir., 2017, 16.4: 217-232. http://dx.doi.org/10.15576/ASP.FC/2017.16.4.217
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Streszczenie w języku polskim:
http://www.formatiocircumiectus.actapol.net/tom16/zeszyt4/abstrakt-217.html