Dam Construction

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Created by Ma. Maiden Continedo from University of Southeastern Philippines taking Bachelor of Science in Secondary Education Major in Biological Science.

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Dam Construction

  1. 1.  Arch dams  Gravity dams  Arch- gravity dams  Barrages dams  Embankments dams
  2. 2. Arch dams -The most desirable place for an arch dams is a narrow canyon with steep side wall abutments Two types: Constant-radius dam Constant-angle dam
  3. 3. Gravity dams - Classified as ‘solid’ or ‘hollow’ and made either concrete or masonry. -The force that holds the dam in place against the push from the water in earth’s gravity pulling down on the mass of the dam. - can prove to be a better alternative to other types of dam.
  4. 4. Arch-gravity dams - for areas with massive amounts of water flow less material available for a purely gravity dam.
  5. 5. Barrages dams - is a special kind of dam which consist of a line of large gates that can be opened or closed to control the amount of water passing the dam.
  6. 6. Embankment dams -are made from compacted earth, and have two main types; rock -fill and earth – fill dams. -rely on their weight to hold back the force of water, like gravity dams made from concrete.
  7. 7.  Power generation  Water supply  Stabilize water flow/irrigation  Flood prevention  Land reclamation  Water diversion  Navigation  Recreation and aquatic beauty
  8. 8.  The word ‘ flood’ comes from old English ‘flod’ ( float , flow )  As flood as a covering by water of land not normally covered by water, “ Flowing water”. Flooding may result from the volume of water w/in a body of water, such as lakes or rivers, which overflows or breaks levees w/ the result that some of the water escapes its usual boundaries.
  9. 9. Principles and causes  Revering  Estuarine  Coastal  Catastrophic  Human-induced  Muddy  other
  10. 10. Effects:  Primary effects  Secondary effects  Tertiary and Long-term effects - physical damage - Water supplies - Diseases - Crops and food supplies - Trees - Transport - Economic
  11. 11.  comes form the ground  is even used to irrigate crops w/c grows food.  comes from rain, snow, sleet and hail that soaks into the ground.  the area that filled w/ water is called the saturated zone and the top zone is called the water table.  an area that holds a lot of water, w/c can be pumped up w/ a well is called an aquifer. Note: Most groundwater is clean but groundwater can become polluted or contaminated.
  12. 12. The End...... Prepared by: Continedo, Ma. Mieden D. BSED- Bio Sci II

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