Assessment of engineering geology and grouting applications in Yalnızardıç Dam Site (Antalya, Türkiye)

Year 2024, Volume: 8 Issue: 1, 20 - 30, 19.01.2024

Ömür Çimen , Halil İbrahim Günaydın

https://doi.org/10.31127/tuje.1221774

Abstract

The Yalnızardıç roller compacted concrete (RCC) dam, constructed in 2015, is located in the Mediterranean region of Turkey, intended for electric power production. It is approximately 303 m long and 92 m in height. In this paper, it is aimed to determine the performance of the grouting method, conducted to control the water seepage and improve the foundation of the Yalnızardıç dam. The engineering properties of the site were introduced by geological mapping, drilling, and laboratory tests. The seepage of the foundation was determined by the in-situ Lugeon test method, also referred to as a water pressure test, which is estimate the mean hydraulic conductivity of rock mass. As a result of the tests, high-permeable and permeable zones were determined in the dam axis area. To make a barrier layer for these permeable zones, grout curtains were built in the left abutment, thalweg and right abutment with two lines of grouting holes which is proposed according to the Lugeon test and rock quality designation (RQD) results. Consolidation grouts were built to increase the density of the soil which makes the strength of the dam's foundation. After the groutings, check boreholes were drilled and water pressure tests were performed to control the seepage along the foundation and dam site. The results indicated that average Lugeon (LU) values reduced, and the values were within the recommended limit. The process shows considerable accuracy in evaluating grouting efficiency.

Keywords

Soil stabilisation, Permeability, Grouting, Seepage, Dams

Thanks

Field investigations described in the paper were performed by General Directorate of the State Hydraulic Works (DSI). The authors wish to express deep gratitude to the DSI staff who contributed to the work reported in the paper and to the Editor. The opinions expressed in this paper are solely those of the authors.

References

• Sohrabi-Bidar, A., Rastegar-Nia, A., & Zolfaghari, A. (2016). Estimation of the grout take using empirical relationships (case study: Bakhtiari dam site). Bulletin of Engineering Geology and the Environment, 75, 425-438. https://doi.org/10.1007/s10064-015-0754-5
• Camilo Quinones-Rozo, P. E. (2010). Lugeon test interpretation, revisited. In: Proceedings of the 30th Annual USSD Conference, Sacramento, California, 12–16 Apr 2010, 405–414.
• Ewert, F. K. (1997). Permeability, groutability and grouting of rocks related to dam sites, Part 3: hydrogeological regime around dams and reservoir. Dam Engineering, 8 (3), 215–248.
• Houlsby, A. C. (1991). Construction and design of cement grouting: a guide to grouting in rock foundations (Vol. 67). John Wiley & Sons.
• Lin, P., Zhu, X., Li, Q., Liu, H., & Yu, Y. (2016). Study on optimal grouting timing for controlling uplift deformation of a super high arch dam. Rock mechanics and rock engineering, 49, 115-142. https://doi.org/10.1007/s00603-015-0732-z
• Mesci, B. (2006). Examination of infiltrations and phreatic line in filler dam bodies: Seferihisar dam. Master’s Thesis, Istanbul Technical University
• Kocbay, A., & Kilic, R. (2006). Engineering geological assessment of the Obruk dam site (Corum, Turkey). Engineering Geology, 87(3-4), 141-148. https://doi.org/10.1016/j.enggeo.2006.04.005
• Agan, C. (2015). Engineering geological and geomechanical assessments of the proposed Mezra dam site (Şanlıurfa, Turkey). Arabian Journal of Geosciences, 8(4), 2371-2381. https://doi.org/10.1007/s12517-014-1317-y
• Gurocak, Z., & Alemdag, S. (2012). Assessment of permeability and injection depth at the Atasu dam site (Turkey) based on experimental and numerical analyses. Bulletin of Engineering Geology and the Environment, 71, 221-229. https://doi.org/10.1007/s10064-011-0400-9
• Kociánová, M., Drochytka, R., & Černý, V. (2016). Technology of remediation of embankment dams by optimal grout. Procedia Engineering, 151, 257-264. https://doi.org/10.1016/j.proeng.2016.07.370
• Chhun, K. T., Lee, S. H., Keo, S. A., & Yune, C. Y. (2019). Effect of acrylate-cement grout on the unconfined compressive strength of silty sand. KSCE Journal of Civil Engineering, 23, 2495-2502. https://doi.org/10.1007/s12205-019-1968-z
• Turkmen, S. (2003). Treatment of the seepage problems at the Kalecik Dam (Turkey). Engineering Geology, 68(3-4), 159-169. https://doi.org/10.1016/S0013-7952(02)00225-9
• Chun, B. S., Lee, Y. J., & Chung, H. I. (2006). Effectiveness of leakage control after application of permeation grouting to earth fill dam. KSCE Journal of Civil Engineering, 10(6), 405-414. https://doi.org/10.1007/BF02823979
• Ozcelik, M., & Tuzlu, F. (2018). Leakage analysis of Deriner dam (Artvin-Turkey) using 3D modeling. KSCE Journal of Civil Engineering, KSCE Journal of Civil Engineering, 22(8), 2916-2922. https://doi.org/10.1007/s12205-017-1793-1
• Alkaya, D., & Yesil, B. (2011). Grouting applications of grout curtains in Cindere dam and hydroelectric power plant. Scientific Research and Essays, 6(19), 4039–4047. https://doi.org/10.5897/SRE11.103
• Özçelik, M. (2014). Foundation consolidation grouting applications in Deriner Dam and hydroelectric power plant (Artvin, Turkey). Bulletin of Engineering Geology and the Environment, 73, 493-498. https://doi.org/10.1007/s10064-013-0547-7
• Deere, D. U. (1968). Geological considerations. In: Stagg RG, Zienkiewicz DC (eds) Rock mechanics in engineering practice. Wiley, New York, 1–20.
• Lee, C. H., & Farmer, I. (1993). Fluid flow in discontinuous rocks. Chapman & Hall, New York
• Nappi, M., Esposito, L., Piscopo, V., & Rega, G. (2005). Hydraulic characterisation of some arenaceous rocks of Molise (Southern Italy) through outcropping measurements and Lugeon tests. Engineering geology, 81(1), 54-64. https://doi.org/10.1016/j.enggeo.2005.07.007
• Hamm, S. Y., Kim, M., Cheong, J. Y., Kim, J. Y., Son, M., & Kim, T. W. (2007). Relationship between hydraulic conductivity and fracture properties estimated from packer tests and borehole data in a fractured granite. Engineering Geology, 92(1-2), 73-87. https://doi.org/10.1016/j.enggeo.2007.03.010
• Berhane, G., & Walraevens, K. (2013). Geological challenges in constructing the proposed Geba dam site, northern Ethiopia. Bulletin of Engineering Geology and the Environment, 72, 339-352. https://doi.org/10.1007/s10064-013-0480-9
• DSI, (2013). Geotechnical Report: Yalnızardıç Dam and Berat Hydroelectric Power Plant. Ankara, Turkey, 39–41.
• Günaydın, H. İ. (2017). Yalnizardic Dam and Berat Hydroelectric Power Plant implementation of grouting. Master's Thesis, Süleyman Demirel University