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Dam safety in a hydrological perspective-Case study of the historical water system of Sala Silver Mine
KTH, Superseded Departments, Land and Water Resources Engineering.
2004 (English)Licentiate thesis, comprehensive summary (Other scientific)
Abstract [en]

The old water system in Sala, formerly belonging to thesilver mine, is analysed with regard to dam safety focusing onthe hydrological aspects. The hydrological safety of the riskclass I dams in the area, built in the 16th century, is notconsidered adequate according to the Swedish guidelines fordesign flood determination. A review is made of internationalprinciples for design flood determination. The overview showsthat there is no common principle used internationally whendealing with design flood for dams. In some countries there isan ambition to implement risk assessment for evaluation ofhydrological safety. However, at present Australia is the onlycountry that has fully integrated risk assessment in theirdesign flood guidelines. A risk assessment of the water systemin Sala shows that neither increasing the spillway capacity norimplementing flood mitigation measures in the watershed haveany significant effect on dam safety in the area. Nothingindicates that watersheds with a high presence of mires, likein the Sala case, should be particularly well suited forimplementing flood mitigation in the watershed as a dam safetymeasure. In order to safely handle the design flood in Sala andavoid dam failure due to overtopping the flood needs to bediverted from the water system.

Key words:dam safety; design flood; flood mitigation;hydrological; risk assessment

Place, publisher, year, edition, pages
Stockholm: Mark och vatten , 2004. , viii, 35 p.
Trita-LWR. LIC, 2021
Keyword [en]
dam safety, design flood, flood mitigation, hydrological, risk assessment
URN: urn:nbn:se:kth:diva-1780ISBN: 91-7283-779-9OAI: diva2:7782
Available from: 2004-07-07 Created: 2004-07-07

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