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Coping with extreme floods through dam refurbishment – a Swedish practice
Vattenfall R&D.
Vattenfall AB.
2006 (Engelska)Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

With the current guidelines of design floods, studies have shown that many high-hazard dams in Sweden have a higher design flood than constructed for. An extensive dam-safety program is currently going on to adapt the dams to the guidelines. The paper illustrates a number of dams undergoing refurbishment to withstand extreme flood events. Alternative engineering measures are mainly (1) modification of the existing spillway to increase its discharge capacity; (2) increase of the spillway capacity by allowing the water to rise above the legal retention level , (which usually creates a need to reinforce the dam); and (3) mitigation of the flood magnitude by temporary storage of flood water in large reservoirs of a river basin. For the safe discharge of the new design flood, there is a need to check such aspects of a dam as leakage potential, risk for inner erosion, dam slope stability, energy dissipation, risk for erosion in the waterways, etc.

Ort, förlag, år, upplaga, sidor
2006.
Nyckelord [en]
Floods, dam refurbishment, design flood
Nationell ämneskategori
Samhällsbyggnadsteknik
Identifikatorer
URN: urn:nbn:se:kth:diva-179791OAI: oai:DiVA.org:kth-179791DiVA, id: diva2:889456
Konferens
22nd ICOLD Congress, June 2006, Barcelona, Spain
Anmärkning

QC 20160107

Tillgänglig från: 2015-12-25 Skapad: 2015-12-25 Senast uppdaterad: 2016-01-07Bibliografiskt granskad

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