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.
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.
The capacity of rivers Váh, Small Danube and the deviation of river Nitra, located in Slovakia, is sufficient in terms of transferring flood flow rates, however defects occur during long-lasting flood situations. If the problem is ignored, different processes may eventually endanger the adjacent territory or may lead to contamination of water and soil as a result of flooding a nearby sewage treatment plant. For these reasons an additional sealing of dykes was proposed. The article deals with the impacts of suspended cutoff walls on groundwater flow and level regime in a wider area for both steady and unsteady scenarios.
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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