Investigation of Leakage and Stability Analysis in Rock Filling Dams: The Example of Kolludere Pond

Öz

Dams and ponds as engineering structures pose various risks during design, construction and operation. Deformation in dams, slope stability problems or excessive pore pressure can cause serious damage that cannot be prevented. It is critical to position these areas correctly and to evaluate the potential damage quantitatively. In rockfill dams, serious work needs to be done during the planning and project phase, especially on infiltration and slope safety. Otherwise, serious damages that cannot be prevented may occur in the dams. In this article, an example of rockfill dam type, infiltration and body stability analyzes of the 34 m high Kolludere Pond were calculated using the finite element method. The Geostudio program developed by the Geo-Slope company was used in the calculation of this analysis. For the analysis, the parameter values included in the field studies carried out with DSI were used. The dam body was modeled using parameter values and laboratory experiments. As a result of the modeling, whether the body of the pond remained in slope safety and the infiltration analysis results were evaluated.

Anahtar Kelimeler

• pore water pressure
• stability
• rockfill dams
• seepage
• ground

Kaynakça

1. [1] Seismic cracking evolution for anti-seepage face slabs in concrete faced rockfill dams based on cohesive zone model in explicit SBFEM-FEM frame
2. [2] Modeling coupled processes of non-steady seepage flow and non-linear deformation for a concrete-faced rockfill dam
3. [3] Zarfl C, Lumsdon AE, Berlekamp J, et al. A global boom in hydropower dam construction. Aquat Sci 2015;77(1):161–70.
4. [4] Qu Y, et al. Seismic damage performance of the steel fiber reinforced face slab in the concrete-faced rockfill dam. Soil Dynam Earthq Eng 2019;119:320–30.
5. [5] Cernica J.N Geotechnical Engineering: Soil Mechanics, John Wiley and Sons Inc., Canada 1995.
6. [6] Sağlıca, 2013 Leakage Analysis of Embankment Dam Bodies, Master's Thesis, University Gazi, Ankara, 85 p.
7. [7] Ministry of Forestry and Water Affairs, General Directorate of State Hydraulic Works, 1st Dams Congress, Embankment Dams Design Guide October, 2012 Ankara p, 1-151
8. [8] Devlet Su işleri, DSİ, 2015 Kolludere Pond, Planning Report

9. [9] Devlet Su işleri, DSİ, 2015 Kolludere Pond, Geotechnical Report
10. [10] AFAD, 2019, https://deprem.afad.gov.tr/ earthquake-hazard-map Internet Resource
11. [11] Chen, W. F. ve Mizuno, E., Nonlinear Analyses in Soil Mechanics: Theory and Implementation, Elsevier, Amsterdam, 1990.
12. [12] Zienkiewicz, O.C. ve Taylor, R. L., The Element Method, Vol. 1, 4thEdition, Mc Hill, New York, 1989.
13. [13] Zorluer ve ark. 2018 Investigation of Dam Leakage and Slope Stability Analysis: The Case of Kızık Dam, 5th International Dam Safety Symposium, 27 October-1 November 2018, İstanbul