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No. 17 of 19 Geosynthetics in Dams by Daniele Cazzuffi ENEL Hydro, Milan, Italy. The information presented in this document has been reviewed by the Education.

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Presentation on theme: "No. 17 of 19 Geosynthetics in Dams by Daniele Cazzuffi ENEL Hydro, Milan, Italy. The information presented in this document has been reviewed by the Education."— Presentation transcript:

1 No. 17 of 19 Geosynthetics in Dams by Daniele Cazzuffi ENEL Hydro, Milan, Italy. The information presented in this document has been reviewed by the Education Committee of the International Geosynthetics Society and is believed to fairly represent the current state of practice. However, the International Geosynthetics Society does not accept any liability arising in any way from use of the information presented.

2 Main Functions of Geosynthetics in Dams FunctionProducts (see notes for key to product types) Types of Dam Earth /RockConc /Masonry Rolled Conc BarrierGMB, GCM New/ Refurb RefurbNew DrainageGT, GN, GCD New/ Refurb RefurbNew Erosion Control GT, GN New/ Refurb RefurbNew FiltrationGT New/ Refurb ProtectionGT, GG, GCR New/ Refurb ReinforcementGT, GA,GL, BT, BA, BL New/ Refurb

3 Contrada Sabetta Rockfill Dam

4 1.Concrete slab (0.2m th) 2.Sheet Bit paper Felt + 2 sheets membrane 3.Porous Concrete 4.R/C Slabs 5.Dry Masonry 6.Joint 7. Plastic Conc wall 8. Conc plinth 9. Gallery

5 Contrada Sabetta Rockfill Dam

6 Sampling of Geomembrane.

7 Lago Nero Concrete Dam

8 Lago Nero Concrete Dam Upstream Facing

9 Lago Nero Concrete Dam Upstream Facing After the Rehabilitation Works.

10 Concepcion RCC Dam in Honduras

11 La Parade Homogeneous Earthfill Dam 1,2,3 4, 5 : Construction layers

12 La Parade Homogeneous Earthfill Dam

13 Codole Rockfill Dam : France

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15 Valcros Earth Dam : France

16 Placing the Geotextile Filter in the Upstream Facing of Valcros Dam

17 Hans Strijdom Zoned Rockfill Dam

18 Maraval Dam – France (1976)

19 Maraval Dam

20 Davis Creek Dam : USA

21 Surface Erosion Control

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23 Moochalabra Dam : Australia 1.Steel Mesh 2.Rockfill 3.Granular filter 4.Clay Core

24 Blue Ridge Parkway Dam : USA

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26 Filled Geotextile Systems

27 Conclusions Geosynthetics successfully used in rehabilitation and new construction of dams Geosynthetics have allowed reductions in volumes of natural materials used in the dams Geosynthetics can give increased safety in service and reduction of hazards during construction

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29 Blank slide see text

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