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.
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.
Dec 18, 2015
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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 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.
Main Functions of Geosynthetics in Dams
Function Products(see notes for key to product types)
Types of Dam
Earth /Rock Conc /Masonry
Rolled Conc
Barrier GMB, GCM New/ Refurb Refurb New
Drainage GT, GN, GCD New/ Refurb Refurb New
Erosion Control
GT, GN New/ Refurb Refurb New
Filtration GT New/ Refurb
Protection GT, GG, GCR New/ Refurb
Reinforcement GT, GA,GL, BT, BA, BL
New/ Refurb
Contrada Sabetta Rockfill Dam
Contrada Sabetta Rockfill Dam1. 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
Contrada Sabetta Rockfill Dam
Sampling of Geomembrane.
Lago Nero Concrete Dam
Lago Nero Concrete Dam Upstream Facing
Lago Nero Concrete Dam Upstream Facing After the Rehabilitation Works.
Concepcion RCC Dam in Honduras
La Parade Homogeneous Earthfill Dam
1,2 ,3 4, 5 : Construction layers
Codole Rockfill Dam : France
Valcros Earth Dam : France
Placing the Geotextile Filter in the Upstream Facing of Valcros Dam
Hans Strijdom Zoned Rockfill Dam
Maraval Dam – France (1976)
Maraval Dam
Davis Creek Dam : USA
Surface Erosion Control
Moochalabra Dam : Australia
1. Steel Mesh
2. Rockfill
3. Granular filter
4. Clay Core
Blue Ridge Parkway Dam : USA
Filled Geotextile Systems
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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