Comprehensive Investigation Method for Sudden Increases of Uplift Pressures beneath Gravity Dams: Case Study
Publication: Journal of Performance of Constructed Facilities
Volume 30, Issue 5
Abstract
Due to the complexity and uncertainty of geological conditions, a comprehensive investigation method is proposed to identify main causes of sudden increases of uplift pressures beneath local blocks of a gravity dam, which integrated statistical analyses of in situ seepage observations, inversion analyses of seepage fields using the numerical method, and field investigations. To fully identify the natural geological condition of the foundation after several years of operation, comprehensive field investigations, including core borings, water-pressure tests, and borehole television imaging, are employed. A case study of Xixi Dam is applied to demonstrate the utilization of this method. The study focuses on the local riverbed blocks, underlying which sudden increases of uplift pressures occurred in the months of April and May 2010, as well as March 2012. The primary explanation is that the coupled external loads of low ambient temperature and high reservoir water level induce the phenomenon. Further investigations show that unsatisfactory waterproofing treatments, as well as the intensively tension joints in the broken foundation rock, are the defects responsible for reservoir leakage and sudden high uplift pressures. The proposed method could be employed in investigations of similar problems of gravity dams.
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Acknowledgments
This research was funded by the CRSRI Open Research Program (SN: CKWV2014216KY), the National Natural Science Foundation of China (NSFC) (SN: 51409167, 51139001), the Fundamental Research Funds for the Central Public Welfare Research Institute (SN: Y715018), and the Nonprofit Industry Financial Program of Ministry of Water Resources of of China (SN: 201401022). The observation data provided by the Ninghai Xixi (Huangtan) Reservoir Management Bureau and East China Investigation and Design Institute under CHECC are gratefully acknowledged.
References
Bernstone, C., Westberg, M., and Jeppsson, J. (2009). “Structural assessment of a concrete dam based on uplift pressure monitoring.” J. Geotech. Geoenviron. Eng., 133–142.
Chen, S. H., Wang, W. M., She, C. X., and Xu, M. Y. (2000a). “Unconfined seepage analysis of discontinuous rock slope.” J. Hydrodyn. Ser. B, 12(3), 75–86.
Chen, S. H., Xue, L. L., Xu, G. S., and Shahrour, I. (2010). “Composite element method for the seepage analysis of rock masses containing fractures and drainage holes.” Int. J. Rock. Mech. Min., 47(5), 762–770.
Chen, Y. F., Zhou, C. B., and Zheng, H. (2008). “A numerical solution to seepage problems with complex drainage systems.” Comput. Geotech., 35(3), 383–393.
Chen, Y. Q, Nishiyama, T., Terada, M., and Iwamoto, Y. (2000b). “A fluorescent approach to the identification of grout injected into fissures and pore spaces.” Eng. Geol., 56(3–4), 395–401.
Chouinard, L., Bennett, D., and Feknous, N. (1995). “Statistical analysis of monitoring data for concrete arch dams.” J. Perform. Constr. Facil., 286–301.
De Sortis, A., and Paoliani, P. (2007). “Statistical analysis and structural identification in concrete dam monitoring.” Eng. Struct., 29(1), 110–120.
Fedele, R., Maier, G., and Miller, B. (2006). “Health assessment of concrete dams by overall inverse analyses and neural networks.” Int. J. Fract., 137(1–4), 151–172.
Ghobadi, M. H., Khanlari, G. R., and Djalaly, H. (2005). “Seepage problems in the right abutment of the Shahid Abbaspour dam, southern Iran.” Eng. Geol., 82(2), 119–126.
Guedes, Q., and Coelho, P. (1985). “Statistical behaviour model of dams.” Proc., 15th ICOLD Congress, International Commission on Large Dams, Paris, Italy, 319–334.
Guidicini, G., and De Andrade, R. M. (1988). “Seasonal oscillation uplift pressures in hydraulic structure foundations due to environmental thermal variations.” Rock mechanics and power plants, M. Romana, ed., Balkema, Rotterdam, Netherlands, 467–471.
Hanna, A. W., Plewes, H. D., Wong, R., and Seyer, W. C. (1993). “Investigations of high uplift pressures beneath a concrete dam.” Can. Geotech. J., 30(6), 974–990.
Kalkani, E. C. (1992). “Ambient temperature effect in concrete dam foundation seepage.” J. Geotech. Eng., 1–11.
Kutzner, C. (1996). Grouting of rock and soil, Balkema, Rotterdam, Netherlands.
Mandl, R. (1985). “Orthogonal Latin squares: An application of experiment design to compiler testing.” Commun. ACM, 28(10), 1054–1058.
Patias, J., Zuquette, L. V., and Rodrigues-Carvalho, J. A. (2015). “Piezometric variations in the basaltic massif beneath the Itaipu hydroelectric plant (Brazil/Paraguay border): Right buttress dam.” Bull. Eng. Geol. Environ., 74(1), 207–231.
Salazar, F., Morán, R., Toledo, M. Á., and Oñate, E. (2015). “Data-based models for the prediction of dam behaviour: A review and some methodological considerations.” Arch. Comput. Methods Eng., 1–21.
Simon, A., Royer, M., Mauris, F., and Fabre, J. (2013). “Analysis and interpretation of dam measurements using artificial neural networks.” Proc., 9th ICOLD European Club Symp., International Commission on Large Dams, Paris, Italy.
Su, H. Z., Hu, J., and Wen, Z. P. (2013). “Service life predicting of dam systems with correlated failure modes.” J. Perform. Constr. Facil., 252–269.
Tayfur, G., Swiatek, D., Wita, A., and Singh, V. (2005). “Case study: Finite element method and artificial neural network models for flow through Jeziorsko Earthfill Dam in Poland.” J. Hydraul. Eng., 431–440.
Turkmen, S. (2003). “Treatment of the seepage problems at the Kalecik Dam (Turkey).” Eng. Geol., 68(3–4), 159–169.
Uromeihy, A., and Barzegari, G. (2007). “Evaluation and treatment of seepage problems at Chapar-Abad Dam, Iran.” Eng. Geol., 91(2–4), 219–228.
Wu, Z. R. (2003). “Statistical models for seepage flow observation data.” Safety monitoring theories and applications of hydraulic structure, Higher Education Press, Beijing, 129–152.
Wu, Z. R., Li, J., Gu, C. S., and Su, H. Z. (2007). “Review on hidden trouble detection and health diagnosis of hydraulic concrete structures.” Sci. China Series E: Technol. Sci., 50(S1), 34–50.
Yan, F. Z., Tu, X. B., and Li, G. C. (2004). “The uplift mechanism of the rock masses around the Jiangya dam after reservoir inundation, China.” Eng. Geol., 76(1–2), 141–154.
Zee, C., Zee, R., and Zee, R. (2011). “Pore pressures in concrete dams.” J. Geotech. Geoenviron. Eng., 1254–1264.
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Published In
Journal of Performance of Constructed Facilities
Volume 30 • Issue 5 • October 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Jun 18, 2015
Accepted: Dec 10, 2015
Published online: Feb 23, 2016
Discussion open until: Jul 23, 2016
Published in print: Oct 1, 2016
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