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D A M S

D A M S. Created by :Pearl Shah(58) Jeet Agrawal(49) Guided by :Prof. Sejal Desai Silver Oak College Of Engineering & Technology. What is a dam?.

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D A M S

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  1. DAMS Created by:Pearl Shah(58) Jeet Agrawal(49) Guided by :Prof. Sejal Desai Silver Oak College Of Engineering & Technology.

  2. What is a dam? • A dam is a barrier built across a stream, river or estuary to hold and control the flow of water for such uses as drinking water supplies, irrigation, flood control and hydropower generation etc.

  3. Dams are classified on several aspects, some of the important aspects are as follow: • Based on Hydraulic Design: • Over flow dams (e.g. concrete dams) • Non over flow dams (e.g. embankment dams) • Based on Structural Design: • Gravity dams • Arch dams • Buttress dams • Based on Usage of Dam: • Storage dams • Diversion dams • Detention dams Classification of dams:

  4. Classification of dams: • Based on Construction Material: • Concrete / Masonry dams • Earthfill dams • Rockfill dams • Earthfill rockfill dams • Concrete faced rockfill dams (CFRD) • Based on Capacity: • Small dams • Medium dams • Large dams

  5. Purpose Distribution of Dams Source: International Commission on Large Dams (ICOLD)

  6. Water intake structures Dam body Sluiceway Flow Spillway Parts of Dams Reservoir

  7. Right abutment Downstream slope Upstream slope Principal chute spillway Spillway training walls Berm Top of dam Riprap Toe drain outlet Toe of embankment Left abutment Emergency spillway

  8. Parts of a dam • Dam body: Body forms the main part of a dam as an impervious barrier • Reservoir: It is the artificial lake behind a dam body • Spillway: is that part of a dam to evacuate the flood water from reservoir. • Water intake structures: is a facility to withdraw water from a reservoir. • Sluiceway: Gerektiğinde baraj gölünü tamamen boşaltmak, dolusavak kapasitesini azaltmak, akarsu mansabına bırakılacak suyu salmak amacına yönelik tesisler. • Diversion facilities: To redirect the streamflow from construction area

  9. Determination of dam location • Characteristics of dam location: • Geologic formation • Spillway location and capacity • Diversion conditions • Sediment condition • Transportation facilities • Structural design • Availabilty of meterials

  10. Negative impacts • Imbalance of the ecosystem • Decreased amount of downstream water • Spreading of some water-born diseases • Reduction in the fertility of farmlands

  11. Thank You

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