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енглески

Predrag Pajić, Uroš Urošević, Dušan Polomčić, Milan Dimkić

Negative Impact of Backwater Levels of Danube River and its Tributaries to the Groundwater Regime in Meliorated Riverside Areas

IWA Specialist Groundwater Conference, Conference Proceedings and Book of Abstracts, 09-11 June 2016, Belgrade, Serbia

Institut Jaroslav Černi

2016

This paper describes updated calculation methodology of Danube backwater impact, occurred as a consequence of “Đerdap I” hydropower plant operation, onto the meliorated riverside areas. This methodology is based on hydrodynamic analysis of groundwater regime (size, duration, level and inflow changes) and quantification of melioration areas impairment which is caused by “Đerdap I” hydropower plant operation. By comparing the groundwater regime elements, obtained by variant hydrodynamic calculation in mathematical models for natural – not backed up and actual – backed up water level regime, and also designed backwater regime, the first step was to define boundary, size and duration of Danube backwater impact within this boundary, i.e. impact onto the piesometric levels within the analyzed meliorated areas. Then, additional inflow (size and duration) coming from water flows into previously defined impact zone was quantified and energy consumption necessary for operation and pumping of additional water quantities was determined. In the end, participation (in percentage) of hydropower plant in costs related to establishing and operation of the existing and designed area protection systems. This paper presents the calculation results for three distinctive meliorated areas affected by the Danube backwater (the Nera river-DTD channel, Ivanovo-Pančevo and Elemir-Aradac). The presented methodology, besides defining and quantifying the impact of “Đerdap I” hydropower plant, may be applied for system selection and optimization of riverside melioration area protection, and for presentation of adequate response to a very sensitive issue concerning objective share estimation of relevant participants in protection cost of all melioration areas under the influence of the hydropower plant backwater.

84

89

978-86-82565-46-8

Srbija

HPP ''Djerdap 1''; backwater influence; groundwater regime; hydrodynamic analysis; melioration area; drainage system; additional energy engagement

М30

М33

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