Experimental Analyses of Sedimentation in the Slit Dam Reservoir
Publication: World Environmental and Water Resources Congress 2009: Great Rivers
Abstract
Debris flow is a very destructive flood. These floods mostly occur in high steep mountain areas, and cause lots of economic damages and live claims. The flood contains very dense mixtures of different grain size sediment. In recent years, open-check dams, specially slit dams, are widely used to control debris flows. Slit dams are one of the open check dams presenting one or several vertical openings, going from the dam's base up to the weir. The slit has decreased the dam sedimentation. Analyzing the results in this study shows because of the slit in these dams, sediment evacuation has been increased and Trap Efficiency (TE) has been reduced significantly. In this study, to indicate the sedimentation in the dam reservoir 25 experiment had been set up in a steep tilting flume (22 degree) for 5 width of slit and 5 different particle size, sedimentation is function of volume of the flood in the dam's reservoir, slit width and the particle size. After analyzing the sedimentation profile a dimensionless equations is proposed for the sediment distribution in these dam's reservoir.
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Copyright
© 2009 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
ASCE Technical Topics:
- Dams
- Debris
- Earth materials
- Environmental engineering
- Floods
- Flow (fluid dynamics)
- Fluid dynamics
- Fluid mechanics
- Geology
- Geomaterials
- Geomorphology
- Geotechnical engineering
- Hydraulic engineering
- Hydraulic structures
- Hydrologic engineering
- Mountains
- Particle size distribution
- Pollutants
- Reservoirs
- River engineering
- Sediment
- Solid wastes
- Solids flow
- Wastes
- Water and water resources
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