Filtering check dams are hydraulic structures, which are widely adopted in mountain streams to partly retain debris-flows volumes. Their large use is mainly due to the function of reducing peak discharge and sediment concentration of the debris-flow surge. If their function is optimal, a progressive emptying of the storage basin occurs when more watery discharges flow after the peak or in the occasion of successive ordinary floods. Different criteria have been proposed in literature to correctly design the filter openings, but performance analyses are scarce in the field. The main aim of the study is to verify the functionality in terms of self-cleaning capability of the multiple-slit check dam built in 2011 in the rio Rudan.
Self-cleaning efficiency of open retention check dams: the rio Rudan case study
BETTELLA, FRANCESCO;D'AGOSTINO, VINCENZO
2013
Abstract
Filtering check dams are hydraulic structures, which are widely adopted in mountain streams to partly retain debris-flows volumes. Their large use is mainly due to the function of reducing peak discharge and sediment concentration of the debris-flow surge. If their function is optimal, a progressive emptying of the storage basin occurs when more watery discharges flow after the peak or in the occasion of successive ordinary floods. Different criteria have been proposed in literature to correctly design the filter openings, but performance analyses are scarce in the field. The main aim of the study is to verify the functionality in terms of self-cleaning capability of the multiple-slit check dam built in 2011 in the rio Rudan.
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