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2006
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During the period 1782-1900, artificial meander cutoffs were the most important interferences to the lower Váh River channel. For the study of this phenomenon, we used historic map data sources, such as 1 st – 3 rd military survey of Habsburg Empire, old cadastral, local and regional maps. In the investigated segment of Váh river on Podunajská nížina lowland (stretch between towns Sereď and Komárno), we identified 27 artificial meander cutoffs in total, from which five were already realised during the 18 th century. Some of them were even cut repeatedly. Due to artificial meander cutoffs not only channel shortening and decrease in sinuosity took place, but probably also an increase in channel slope and incision, leading to subsequent narrowing of the channel. The aim of the work is to evaluate chronologically the most important channel alterations to the lower Váh river channel before the end of the 19 th century using historic maps.
2001
Characterization of the influence of building a road on the stability of the tunnel lining in a Banska Bystrica railway tunnel This paper deals with solving the problem of tunnel lining stability in a railway tunnel. The road cut was made into the overburden of the tunnel. I investigated the effect of the road cut on the stability of tunnel lining. The FLAC 3D mathematical modelling technique was used for this purpose. The solution consist of:-modelling the initial situation before building the intervention, Determing the internal characteristics of the tunnel lining in its original state, modelling the situation after making the road cut, Determing the internal characteristics of the tunnel lining after the building intervention, Comparison of the internal characteristics of the tunnel lining before and after the building intervention. In the model, I used these general geotechnical properties of the rock environment and the tunnel lining: Material Youngus modulus [MPa] Poissons Ra...