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  • Author or Editor: Dana Baroková x
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When a flood wave passes along the River Danube, the groundwater level rises, hence property is directly threatened and, in particular, the groundwater resources for the water supply located near the affected rivers increase. As the water is polluted during the flood, a solution to this problem is more than necessary. The specific area for this problem - Sihoť Island, was chosen as one of the most significant areas for groundwater supply in Bratislava. This island is flooded repeatedly every year with several floods. Therefore, it is more than necessary to analyze how the groundwater level reacts to the increased water level in the Danube.

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The overall purpose of this research was to model flow extraction from several groundwater network wells to control the excessive level of groundwater. The study was conducted in the Nitra Industrial Park, which is located in the northern part of the town of Nitra, where the confined groundwater table is situated very close to the terrain. The area of interest is a plain with a mean elevation of 140.0 m a.s.l. The groundwater can rise up to 140.5 and 143.0 m a.s.l. during the dry season, extreme climate conditions, or a flood wave in the Nitra River, respectively. In order to keep the level of the piezometric head below 140.0 m a.s.l. (as requested by the investor), there are already 38 wells realized around the area of interest with the proposed pumping rates.

The numerical groundwater modeling was applied using the TRIWACO simulation package for the given hydrological, geological and hydro-geological conditions. The transient simulation takes into account a Q 1000 historical discharge in the Nitra River and its possible impact on the groundwater. The paper will present numerical modeling results on the design of a drawdown system to lower the groundwater level to an acceptable elevation as well as parameters and uncertainties for the design purpose.

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Authors: Michaela Červeňanská, Dana Baroková and Andrej Šoltész

The water sources located on the inland islands on the left side of the Danube River as well as water sources located on the right bank of the Danube River in the Pečniansky forest have an irreplaceable function in terms of supplying the population in Bratislava with drinking water. There are 80 wells in these mentioned areas operated by the Bratislava Water Company. In order to maintain the actual functions of the water resources, it is therefore necessary to assess the impact of the proposed construction of the multi-purposed structure ‘Hydraulic structure Bratislava — Pečniansky forest’ on these water sources.

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Authors: Michaela Červeňanská, Adam Janík and Dana Baroková

Drainage channels are artificial multi-functional elements in a landscape, which have their own specific functions. Although they are primarily used for the drainage of water, they can also even be used for an opposite function, i.e. the artificial water supply of specific regions. This article presents an evaluation of infiltration experiments in drainage channels in the southeastern part of Slovakia. These experiments served for the collection of input data for numerical modeling, especially the determination of the soil type and hydraulic conductivity. The methodology of experimental works in the field as well as some basic information about their evaluation is included.

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The new proposed railway network in the city of Bratislava, which is supposed to be connected to the airport, is an integral part of Trans-European Network for Transport .Certain section of the planned railway should be constructed along Carpathian Mountains through underground tunnels. However, the construction of this underground tunnel will adversely affect the groundwater flow regime. Therefore, it was necessary to establish a 2D finite element numerical model to evaluate the implementation of this railway tunnel on the groundwater regime as well as means of technical measures to reduce the impacts. The paper presents the model result, analyses, prognosis as well as possible methods to control the groundwater level regime in the aquifer that could be affected by the railway tunnel construction.

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