Acta Univ. Agric. Silvic. Mendelianae Brun. 2009, 57, 279-284
Published online 2014-10-10

Possibility of utilization of direction construction in river revitalization

Jana Synková

Ústav tvorby a ochrany krajiny, Mendelova zemědělská a lesnická univerzita v Brně, Zemědělská 3, 613 00 Brno, Česká republika

Directing and concentrating structures are used mainly on water coursers with unstable channel and major sediment transport or in areas with major bank erosion. The main purpose of these structures is to redirect water flow from the stressed and very often eroded bank to the centre of the channel or other parts of the channel, where the water flow may be used e.g. for dispersion of unsuitable deposit before its eventual stabilization by natural succession.
Another important goal is to achieve a desired change of the stream channel by using the transporting power of the water flow and targeted depositing of sediment. In the area of the deflecting structure (deflector), so-called hydraulic shadow also appears where sediment deposits. The objective is to achieve depositing of sediments at desired places of the stream.
It is possible to design a whole range of suitable or less suitable types of flow deflectors. In our article, we will particularly focus on problems of revitalization of a water course; that is design of structures from biological or biotechnical elements for channel stabilization.


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