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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 18:18 |
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Conference: Bucharest University Faculty of Physics 2016 Meeting
Section: Atmosphere and Earth Science; Environment Protection
Title:
Seismic risk classes for dams situated in the Eastern part of Romania
Authors:
Iren-AdelinaMOLDOVAN (1),Anica Otilia PLACINTA (1), Angela Petruta CONSTANTIN (1), Cristian GHITA (1), Dragos TOMA-DANILA (1), Felix BORLEANU (1), Emilia POPESCU (1), Victorin Emilian TOADER (1) and Traian MOLDOVEANU (2)
Affiliation:
1) National Institute for Earth Physics, Magurele, Ilfov, Romania, iren@infp.ro
2) Geotec Consulting Ltd, Bucharest, Romania
E-mail
Keywords:
Seismic risk,Eastern part of Romania
Abstract:
Not only humans but also dams are getting older. Dams, as all other constructions and infrastructures, are subject of ageing processes. The average age of Romania’s 250 large dams tabulated in the Romanian Register of Large Dams (RRMB) from a total of 2617 permanent and temporary dams, is 40 years. In Romania there are 3 dams having an age of more than 100 years. The oldest one (111 years old), Sadu II, Sibiu, was put into operation in 1905, and is a small 18 m high gravity dam. More than 100 dams are in the immediate vicinity of populated areas, like the Morii Dam on Dambovita River in the Western part of Bucharest, the capital of Romania. In the Eastern part of Romania, Moldova region, are 78 large dams, 22 of them on Siret and Bistrita rivers and their tributaries. The oldest dam in the Eastern part of Romania (55 years old) is also the highest one: Izvorul Muntelui Dam, on Bistrita River, h=123m and is situated at less than 3Km from Bicaz city.Besides periodical technical inspections, the monitoring and the surveillance of dams’ related structures and infrastructures, there are some more seismic specific requirements towards dams’ safety. The most important one is the seismic risk assessmentthat can be accomplished by rating the dams into seismic risk classes using the theory of Bureau and Ballentine (2002),andBureau (2003), taking into account the maximum expected peak ground motions at the dams site, structures vulnerability and the downstream risk characteristics (human, economical, historic and cultural heritage, etc) in the areas that might be flooded in the case of a dam failure. In the present work probabilistic seismic hazard (PSH), vulnerability and risk studies for 78 dams situated in the Moldavian Platform, starting from Izvorul Muntelui Dam, down on Bistrita and following on Siret River and theirs affluent are realized.
References:
1.Bureau GJ (2003) “Dams and appurtenant facilities”Earthquake Engineering Handbook, CRS Press, WF Chen, and C Scawthorn (eds.), Boca Raton, pp. 26.1-26.47.
2.Bureau GJ and BallentineGD (2002) “A comprehensive seismic vulnerability and loss assessment of the State of Carolina using HAZUS. Part IV: Dam inventory and vulnerability assessment methodology”, 7thNational Conference on Earthquake Engineering, July 21-25, Boston, Earthquake Engineering Research Institute, Oakland, CA (CD ROM).
Acknowledgement:
The work is supported from PCCA 2013 Project DARING 69/2014, financed by UEFISCDI, Romania.
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