*Pranoto S. Atmodjo  -  , Indonesia
Sri Sangkawati  -  , Indonesia
Kirno Kirno  -  , Indonesia
Published: 13 Sep 2013.
Open Access
Citation Format:
This study compares the effectiveness of the flushing of sediment in the reservoir by means of flushing and
Sluicing way, based on Physical Hydraulic Test (Model Test) in the laboratory. Flushing is removing
accumulated deposited sediment. While slucing is releasing of sediment through the reservoir before
settled or keep sediment remain in suspension and its occur during flood period. Sediments Flush
Effectiveness represented by the percentage of released sediment by sediment deposited or the amount of
sediment entering the reservoir during the flushing period.The model based on the prototipe from Detail
Design of Structural Countermeasures for Sedimentation on Wonogiri Reservoir by Nippon Koei 2009.
Running model duration is one hour, used free flow and submergence condition, with discharge variation
Q=100, 200 and 400 m3/s. Sluicing experiments conducted with some 60 liters of sediment sprinkle evenly
wide flow, and Flushing implemented by 2,00 m thickness of deposited sediment that spreaded over the
reservoir bottom before running. From this research showed that Sluicing way more efficient than the
flushing way, where the number of efficiency of sediment Sluicing way bigger than the efficiency of
flusing way, in the running an hour in the laboratory test
Keywords: Key words: flushing, sluicing, affectvity, hydraulics model test

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