Analysis of Dam Behavior
Carrying out a follow-up of dam behaviour, is essential to guarantee its safety, reduce risks and be able to anticipate any possible problems. Undertaking this type of study is also mandatory in many countries, including Spain, to comply with the growing interest in the safety of infrastructures in general, combined with the special importance that safety has in the case of dams.
The objective is to determine the safety level of dams, converting auscultation data into clear information and completing this with a dam’s history and visual inspections.
OFITECO has vast experience in creating reports for dam behaviour during their useful life, that is, during the stages of their construction, commissioning, exploitation and decommissioning. Currently OFITECO carries out these studies independently or integrated within an Annual Report according to the customer’s needs. Statistical and deterministic models are often included in these reports, which help in a more precise assessment of the level of dam safety. OFITECO also has experience in drafting many technical notes, which come up when analysing dam behaviour due to special requests (earthquakes or floods), or because unusual behaviour has been observed (increase in filtrations or sub-pressures, appearance of a crack, landslides etc). As well as the creation of reports and technical notes, OFITECO has also often taken auscultation data systematically from large dams.
Furthermore OFITECO has developed the powerful computer tool DAMDATA, which carries out an overall management of dam safety.
- Reports on dam behaviour
- Yearly exploitation reports
- Special technical notes
- Visual inspections and Auscultation Readings
- Statistical Assessment
- Deterministic Models
- On-line management of Auscultation Data
- Checking the Reliability of Data
- Review of Systems
Provisonal graph of the horizontal movements measured with an inverted pendulum at the Búbal dam, carried out with DAMDATA:
Comparative plan with horizontal movements obtained at the Búbal dam using an inverted pendulum and geodesy:
Elevation of isotherms at the Lanuza Dam:
Visual inspection plan of the parameter of waters downstream of the Santolea Dam:
Visual field inspection sheet completed with a Tablet and recorded in a Sharepoint server:
- Behaviour reports and review of the auscultation and control systems, hydro-mechanical elements and electrical installations and programming of the management application for exploitation regulations, as well as special technical notes on request, from the following 44 state owned dams being exploited in the Ebro basin: Ebro, Pajares, Monteaguido, Maidevera, Mansilla, González Lacasa, La Tranquera, Las Torcas, Moneva, Almochuel, Cueva Fradada, Santolea, La Estanca, Gallipuen, Pena, Calanda, Caspe II, Eugui, Yesa, Alloz, Búbal, Ardisa, La Sotonera, Las Navas, Vadiello, Sta. Mª de Belsué, Guiamets, Mediano, El Grado, Barasona (Joaquín Costa), Sta. Ana, Oliana, El Val, Urdalur, Itoiz, Rialb, Guara, Valdabra, Torrollón, Cienfuens, Valcomuna and La Trapa. (2007-2011).
- Behaviour reports, drafting of technical notes, taking auscultation data and their continuous follow-up, during the filling and commissioning of the Rialb Dam (Lérida) (2006-2010).
- Behaviour reports for the 5 dams belonging to Eon: Arbón, Doiras, Alsa, Mediajo and Matahoz. (2007-2010).
- Behaviour reports for 11 dams in the Guadiana Hydrographic Confederation: Cíjara, García Sola, Orellana, Serena, Zújar, Ruecas, Azud de Ruecas, Gragáligas, Sierra Brava, Cancho del Fresno and Cubilar. (2005-2010).
- Behaviour reports for 9 dams in the Duero Hydrographic Confederation: Cuerda del Pozo, Arlanzón and Úzquiza in 2011, Camporredondo and Compuerto in 2010, and Riaño between 1973 and 1976.
- Behaviour reports for 12 dams in the Júcar Hydrographic Confederation: Alarcón, Amadorio, Bellús, Beniarrés, Contreras, Escalona, Forata and Guadalest between 2007 and 2010; Tous between 2006 and 2009; Loriguilla, Benagéber and Arquillo de San Blas in 2010.
- Behaviour reports for 12 dams in the Guadalquivir Hydrographic Confederation: Zufre, Aracena, El Pintado, Huesna, Peñaflor, La Puebla de Cazalla, Torre de Águila, Bembézar, José Torán, Vadomojón, Yeguas, Puente Nuevo, Guadalmellato, San Rafael de Navallana, Bornos, Arcos de la Frontera. (2000-2004).
- Behaviour reports for 4 dams of the Catalan Water Agency: La Baells, 17 reports between 1975 and 2009; Boadella between 2006 and 2008; San Martín de Tous and Vallforners between 2006 and 2009.
- Behaviour reports for the Rioseco Dam, for Aguas de Asturias, between 2001 and 2010.
- Behaviour report for the La Tajera dam, for the Tajo Hydrographic Confederation, in 2002 and 2010.
- Behaviour reports for the Camarasa Dam, for Endesa between 2008 and 2012.
- Behaviour reports for Gorostiza and El Regato dams, for Arcelor Mittal, between 2005 and 2010.
- Behaviour reports for the Canelles Dam, for ENHER between 1978 and 1980.
- Behaviour reports for the Rincón Dam, for Agroman between 1976 and 1978.
- Other behaviour reports for the Ebro Hydrographic Confederation: Calanda from 1978 to 1992 and from 1997 to 2001, Yesa from 1981 to 1985 and from 1996 to 2007, Caspe from 1985 to 1998, Torrollón from 1985 to 1993, Mairaga from 1991 to 1993 and from 1996 to 2009, Alloz from 2004 to 2007, Ardisa from 1991 to 1994, Búbal from 1993 to 1995, El Grado from 1993 to 1996, Mediano from 1993 to1995 and in 2003, and Pena from 1996 to 1998.