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Monitoring of vertical deformations by means high-precision geodetic levelling. Test case: The Arenoso dam (South of Spain)

  • M. Clara de Lacy EMAIL logo , M. Isabel Ramos , Antonio J. Gil , Óscar D. Franco , Antonio M. Herrera , Manuel Avilés , Alicia Domínguez and Juan Carlos Chica
Published/Copyright: February 17, 2017
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Abstract

The Arenoso reservoir is created by an embankment dam, with central clay core, slates and greywacke shoulders. This kind of engineering structure is subject of deformation due to factors such as changes of water level of the reservoir, seat structure, climate changes, etc. In general, dam monitoring involves measurements both outside (external shell) and inside the structure. A number of control points is established around the area of the dam and the measurements of the displacements of the control points take place at several epochs. In this study high-precision levelling techniques have been used to monitor the vertical deformations. In particular five high-precision levelling profiles were measured in five surveys: February and July 2008, March and July 2013 and August 2014. In this study the design, observations and results are presented. On the one hand the results put in evidence the precision of the observations that are always under 1-mm level. On the other hand these results indicate downstream (southeastward) motion of the thrust block center of the dam probably during the fall and winter. The subsidence reachs here the maximum with a value of −14 cm in 2014 (in respect of February 2008). The displacements observed at the berms of the dam exhibit a similar trend to the displacements observed at the crest but they are significantly smaller, as expected. The accumulative vertical displacements and the settlement index indicate the magnitude of the movements decrease in time, confirming the dam tends to stabilize.

Funding statement: This research was supported by the projects “Control de deformaciones y riesgos naturales en Ingeniería Civil. Aplicación en la Presa del Arenoso (Córdoba)” (Ref. CGL2011-15441-E) and “Application of the Satellite Radar Interferometry and the Global Navigation Satellite Systems to the control of distortions in the Betic Cordillera” (Ref. AYA2010-15501), funded by the Spanish Ministry of Science and Innovation.

References

[1] Casaca J, Braz N, Conde V. Combined adjustment of angle and distance measurements in a dam monitoring network, Survey Review 2014; 47(342): 181–184; DOI 10.1179/1752270614Y.0000000106.Search in Google Scholar

[2] Galindo-Zaldívar J, Borque M J, Pedrera A, Marín-Lechado C, Gil A J, López-Garrido A C. Deformation behaviour of the low-rate active Balanegra Fault Zonefrom high-precision levelling (Betic Cordillera, SE Spain), Journal of Geodynamics 2013; 71: 43–51.10.1016/j.jog.2013.07.003Search in Google Scholar

[3] Giménez J, Borque M J, Gil A J, Alfaro P, Estévez A, Suriñach E. Comparison of long-term and short-term uplift rates along an active blind reverse fault zone (Bajo Segura, SE Spain), Studia Geophysica & Geodaetica 2009; 53: 81–98.10.1007/s11200-009-0005-ySearch in Google Scholar

[4] Grenerczy G and Wegmüller U. Persistent scatterer interferometry analysis of the embankment failure of a red mud reservoir using ENVISAT ASAR data, Nat Hazards 2011; 59: 1047–1053; DOI 10.1007/s11069-011-9816-6.Search in Google Scholar

[5] Guler G, Kilic H, Hosbas G, Ozaydin K. Evaluation of the Movements of the Dam Embankments by Means of Geodetic and Geotechnical Methods, J. Surv. Eng. 2006; 132: 31–39.10.1061/(ASCE)0733-9453(2006)132:1(31)Search in Google Scholar

[6] Hosbas G, Kartal F, Ersoy N, Erküçük G, Uzel T, Eren K. Surveillance of Oymapinar Dam deformations by means of geodetic control network. Proc., 1st Turkish Int. Symp. on Deformations, Istanbul, Turkey, 491–502, 1994.Search in Google Scholar

[7] Leica Geosystems. A.G. (Ed.), CH-9435 Heerbrugg Switzerland, 2008.Search in Google Scholar

[8] National Geographic Institute (Instituto Geográfico Nacional). Normas para la nivelación geométrica de alta precisión con equipos digitales, 2014 (Accessed July 25, 2016 at ftp://ftp.geodesia.ign.es/REDNAP/Documentacion/).Search in Google Scholar

[9] Penman A D M, Sexena K R and Varma V M. Instrumentation, Monitoring and Surveillance: Embankment Dams, A A Balkema, CRC Press: Rotterdam, 1999.Search in Google Scholar

[10] Pytharouli S I, Stiros S C. Ladon Dam (Greece) Deformation and Reservoir Level Fluctuations: Evidence for a Causative Relationship from the Spectral Analysis of a Geodetic Monitoring Record, Engineering Structures 1999; 27(3): 361–370.10.1016/j.engstruct.2004.10.012Search in Google Scholar

[11] Pytharouli S, Kontogianni V, Psimoulis P, Nickitopoulou A, Stiros S, Skourtis C, Stremmenos F, Kountouris A. Geodetic monitoring of earthfill and concrete dams in Greece, International Journal of Hydropower and Dams 2007; 2: 82–85.Search in Google Scholar

[12] Pytharouli S I, Stiros S C. Investigation of the parameters controlling the crest settlement of a major earthfill dam based on the threshold correlation analysis, Journal of Applied Geodesy 2009; 55–62.10.1515/JAG.2009.006Search in Google Scholar

[13] Romero F, Bobis A, García-Palacios J J, Cruz D J. La presa del Arenoso, Revista de Obras Públicas 2007; 3475: 149–160.Search in Google Scholar

[14] Tedd P, Charles J A, Holton I R, Robertshow. The effect of reservoir drawdown and long-term consolidation on the deformation of old embankment dams, Geotechnique 1997; 47(1): 33–48.10.1680/geot.1997.47.1.33Search in Google Scholar

[15] Vassilis G, Sakellariou M. Settlemet analysis of the Mornos earth dam (Greece): Evidence from numerical modeling and geodetic monitoring, Engineering Structures 2008; 30: 3074–3081.10.1016/j.engstruct.2008.03.019Search in Google Scholar

[16] Yi T H, Li H N, Gu M. Recent research and applications of GPS-based monitoring technology for high-rise structures, Struct. Control Health Monit. 2012; 20: 649–670; DOI: 10.1002/stc.1501.Search in Google Scholar

Received: 2016-7-28
Accepted: 2016-11-18
Published Online: 2017-2-17
Published in Print: 2017-3-1

© 2017 Walter de Gruyter GmbH, Berlin/Boston

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