sediment management in flood control dams

In the name of God

Presentation Subject: Sediment management in flood control dams

Provider: Erfan mohebbi

What is the dam and duty of a dam!?

*Storage

**Suppress floods

What problems may occur for a dam?

Facture

Overflow

sedimentation

What is the sediment and sedimentation!!?

sedimentation

-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.

What is the impact of sedimentation on the dam?

Sedimentation reduces the storage capacity and life span of reservoirs.

How dam sedimentation problem can be resolved?

Dredging and Flushing

-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.

Dredging machine

Hydro suction dredging machine

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

!Thank you for your attentions

The End