sediment management in flood control dams
TRANSCRIPT
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In the name of God
Presentation Subject: Sediment management in flood control dams
Provider: Erfan mohebbi
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What is the dam and duty of a dam!?
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*Storage
**Suppress floods
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What problems may occur for a dam?
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Facture
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Overflow
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sedimentation
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What is the sediment and sedimentation!!?
sedimentation
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-Sediment is solid material that is broken down by process of weathering and erosion and transported in a new location.
-Sedimentation is the deposition of particles carried by a fluid flow.
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What is the impact of sedimentation on the dam?
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Sedimentation reduces the storage capacity and life span of reservoirs.
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How dam sedimentation problem can be resolved?
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Dredging and Flushing
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-Flushing: in this method used water in high pressure to remove bottom sediment of dams.
-Dredging: is an excavation activity carried out under water with purpose of gathering up bottom sediments of dam.
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Dredging machine
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Hydro suction dredging machine
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1-What is the effects of sedimentation on the dam?
2-How dam sedimentation problem can be resolved?
3-In your opinion which method is more effective?
Questions and discussion
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!Thank you for your attentions
The End