Seepage in Filyos Levees Whose Upstream Face is Covered

Year 2021, Volume: 16 Issue: 2, 78 - 88, 27.04.2021

Aykut Semerci , Gökmen Tayfur , Hasan Fırat Pulat

Abstract

Filyos River Basin covers an area of 13.000 km2 in the Western Black Sea Region in Zonguldak. The project area is 203 km in the east-west direction and 120km north-south direction and the slope of the river is quite small. The flood protection project of Filyos River included construction of a total 7km of levee. The aim of this study is to investigate the seepage on covered surface and under the levee when its surface is covered with various materials. The covered materials involve riprap (andesite rock), filter layer (uniform sand) and geocomposite (geomembrane and geotextile). The PlaxFlow module was used for this study and the points of the seepage on covered surface and under the levee are investigated with this software. In the sections at the drilling points, the piping condition expected to be under the levees was investigated. Besides, drilling was carried out at 11 different distances under the Filyos Levee. As a result of the analysis, the most critical cross-section of TSK-13 was found.

Keywords

Levee, Transient Flow, Geocomposite, Seepage, Piping

References

• Akdeğirmen, Ö., Rıza, A. ve Osman, E., (2008). Hidroloji değerlendirme raporu. Antalya.
• Brinkgreve, R.B.J., et al., (2006). PlaxFlow-Version 1.4, Delft University of Technology & Plaxis bv, The Netherlands.
• Federal Emergency Management Agency, (2008). Geotextiles in Embankment Dams.
• Atış, E. and Çelikoğlu, Ş. (2019). Sosyo-ekonomik ve çevresel yönleriyle filyos vadi projesi. International Social Sciences Studies Journal, 5(29):49-68.
• Rice, J., et al., (2012). Reliability-based underseepage analysis in levees using a response surface–monte carlo simulation method. Journal of Geotechnical and Geoenvironmental Engineering.
• Lopez, N.P., et al., (2010). Study of transient flow caused by rapid filling and drawdown in protection levees. International Conference on Scour and Erosion (ICSE-5).
• Ozkan, S., (2003). Analytical study on flood induced seepage under river levees, Submitted to Graduate Faculty of the Louisiana State University and Agricultural and Mechanical College in partial fulfillment of the requirements for the degree of Doctor of Philosophy Thesis, USA.
• Sadique, M.R., (2019). Soil mechanics course notes. Aligarh Muslim University.
• Shifidi, V.T., (2014). Socio-economic assessment of the consequences of in Northern Namibia. Thesis presented in fulfillment of the requirements for the degree of Master of Arts in Geography and Environmental Studies at Stellenbosch University.
• https://en.wikipedia.org/wiki/Hydraulic_Head. Date of access: 06.10.2020.
• Terzaghi, K., et al., (1996). Soil mechanics in engineering practice. 3rd Edition, John Wiley&Sons, Inc, New York, pp:549.
• Yılmaz, H.R. and Eskisar, T., (2010). Usage of geosynthetic products to solve geotechnical problems and their advantages. pp:437-453.
• Zumr, et al., (2010). Soil moisture dynamics in levees during flood events-variably saturated approach, Journal of Hydrology and Hydromechanics, Faculty of Civil Engineering, Dept. of Irrigation, Drainage and Landscape Engineering, Czech Technical University in Prague, Thákurova 7, 166 29 Prague 6, Czech Republic.
• Xie, Q., et al., (2018). Critical hydraulic gradient of internal erosion at the soil–structure interface. School of Civil Engineering, Shandong University, 17922, Jingshi Road, Jinan China, Pro cesses,6,92; doi:10.3390/pr6070092.
• https://uotechnology.edu.iq/depbuilding/LECTURE/SHARING/third_class/soil-mech/Soil%20Mechanics-First%20course%20.pdf
• Çelik, H.E, (2012). Sel kontrolünde hidroloji. Hidroloji, Istanbul.