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A platform for research: civil engineering, architecture and urbanism
Geomembrane systems for repair of dams in cold climates
Geomembrane systems have been adopted for repair of dams in cold climates since the 1970ies. The most widely adopted system is a polyvinylchloride (PVC) geomembrane mechanically anchored to the upstream face of the dam and exposed. The performance of the system has been quite good, and installation has expanded to almost all Alpine countries (Italy, France, Germany, Switzerland, Austria) and to countries with very cold climates (Norway, Bulgaria, Czech Republic, Canada, USA, Mongolia). Significant examples are Midtbotnvatn CFRD in Norway (2004), Linach multiple arch dam (2006) and Waldeck gravity dam (2008) in Germany. The adopted liner is a geocomposite consisting of a PVC geomembrane coupled to an anti-puncture geotextile. At Midtbotnvatn, installation of the geocomposite on the lower older part of the dam reduced leakage from 550l/s to 1.5l/s. At Linach, installation of the geocomposite on all arches allowed bringing back to operation a reservoir kept emptied for years. At Waldeck, the geocomposite lining the gravity dam forming the pumped storage reservoir is watertight connected to the asphalt concrete lining the bottom of the reservoir. The paper discusses applicability of geomembrane systems in cold climates, peculiarities of design and installation for each of the 3 case histories, and benefits obtained.
Geomembrane systems for repair of dams in cold climates
Geomembrane systems have been adopted for repair of dams in cold climates since the 1970ies. The most widely adopted system is a polyvinylchloride (PVC) geomembrane mechanically anchored to the upstream face of the dam and exposed. The performance of the system has been quite good, and installation has expanded to almost all Alpine countries (Italy, France, Germany, Switzerland, Austria) and to countries with very cold climates (Norway, Bulgaria, Czech Republic, Canada, USA, Mongolia). Significant examples are Midtbotnvatn CFRD in Norway (2004), Linach multiple arch dam (2006) and Waldeck gravity dam (2008) in Germany. The adopted liner is a geocomposite consisting of a PVC geomembrane coupled to an anti-puncture geotextile. At Midtbotnvatn, installation of the geocomposite on the lower older part of the dam reduced leakage from 550l/s to 1.5l/s. At Linach, installation of the geocomposite on all arches allowed bringing back to operation a reservoir kept emptied for years. At Waldeck, the geocomposite lining the gravity dam forming the pumped storage reservoir is watertight connected to the asphalt concrete lining the bottom of the reservoir. The paper discusses applicability of geomembrane systems in cold climates, peculiarities of design and installation for each of the 3 case histories, and benefits obtained.
Geomembrane systems for repair of dams in cold climates
Geomembransysteme zur Reparatur von Dämmen unter kalten Klimabedingungen
Scuero, A. (author) / Vaschetti, G. (author)
2009
12 Seiten, 11 Bilder, 4 Tabellen, 3 Quellen
Conference paper
English
Damm , Dammbau , Staudamm , Geomembran , Membran , Geotextil , Geogitter , Sanierung , Reparatur , Deutschland , Frankreich , Österreich , Schweiz , Italien , PVC (Polyvinylchlorid) , Auskleidung , Beschichten , Abdichtung (Abdichten)
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