Coping with extreme floods through dam refurbishment – a Swedish practice
2006 (English)Conference paper (Refereed)
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.
Place, publisher, year, edition, pages
Floods, dam refurbishment, design flood
IdentifiersURN: urn:nbn:se:kth:diva-179791OAI: oai:DiVA.org:kth-179791DiVA: diva2:889456
22nd ICOLD Congress, June 2006, Barcelona, Spain
QC 201601072015-12-252015-12-252016-01-07Bibliographically approved