Author(s): L. Goelz
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Keywords: No Keywords
Abstract: In contrast to conventional river training, bedload management measures do not change the transport capacity of a river. Instead bedload has to be adapted to the hydraulic and sedimentological conditions of the river reach considered. Besides practical questions as technical feasibility, logistics and availability of material to be fed to the river, some sedimentological aspects have to be taken into account especially when dealing with artificial bedload supply. This refers in particular to the processes of hydraulic sorting, dispersion, and abrasion. Whilst mass loss due to abrasion can be determined by lab tests and verified by roundness analyses, hydraulic sorting and the mixing process, which is to a great extend responsible for dispersion are quantified by tracer tests carried out in the river itself. First results of long term field tests show, that the combination of lab-and field tests create the professional base for optimizing bedload management especially artificial bedload supply.
Year: 2004