EGU22-13134, updated on 13 Aug 2022
https://doi.org/10.5194/egusphere-egu22-13134
EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Seepage loss from unlined, lined, and cracked-lined canals: a case study of Ismailia canal reach from 28.00–49.00 Km, Egypt

Elsayed Elkamhawy1, Martina Zelenakova2, Salvatore Straface3, Zuzana Vranayová4, Abdelazim M. Negm1, Andrea Scozzari5, and Ismail Abd-Elaty1
Elsayed Elkamhawy et al.
  • 1Water and Water Structures Engineering Department, Faculty of Engineering, Zagazig University, Zagazig 44519, Egypt
  • 2Department of Environmental Engineering, Faculty of Civil Engineering, Technical University of Kosice, Kosice 04200, Slovakia
  • 3Department of Environmental and Chemical Engineering, University of Calabria, Ponte P. Bucci, 87036, Rende, Italy
  • 4Department of Building Services, Faculty of Civil Engineering, Technical University of Kosice, Kosice 04200, Slovakia
  • 5CNR Institute of Information Science and Technologies (CNR-ISTI), Via Moruzzi 1, 56024 Pisa, Italy

Water resources face global and local challenges. In Egypt, for example,  the negative impacts of climatic changes and the Grand Ethiopian Renaissance Dam (GERD), cause a shortage of water resources. Shortage of water resources is considered an urgent issue particularly in semiarid regions (like many MENA countries) and arid ones (like Egypt). Therefore, the Egyptian Ministry of Water Resources and Irrigation has launched the national project of canals rehabilitation and lining for effective water resource management and decreasing seepage losses. This study dealt with three different lining techniques, as well cracked-liner for the Ismailia canal, which is considered the largest end of the Nile in Egypt. A steady-state 2-D seep/w model was established for the Ismailia canal section, at the stretch from 28  to 49 km. The results showed that the amount of seepage was considerably depending on the hydraulic characteristics of the lining material. Pumping from aquifers through wells also has a significant influence on the seepage rate from the unlined canal. Nevertheless, a negligible effect was present in the lined canal case. The highest efficiency was obtained with the concrete liner, after that the geomembrane liner, and then the bentonite liner; with nearly 99%, 96%, and 54%, respectively, in the case of no pumping from aquifer via wells. The efficiency decreased by 4% for the bentonite and geomembrane liners during pumping from the aquifer, but the concrete liner efficiency did not change significantly. However, in the case of deterioration of the lining material through cracks, the efficiency strictly decreased to 25%, irrespective of the utilized lining technique. The dual effect of both cracked-liner material and extraction from the aquifer via pumping wells revealed an efficiency of 16%, regardless of the utilized liner type.

How to cite: Elkamhawy, E., Zelenakova, M., Straface, S., Vranayová, Z., Negm, A. M., Scozzari, A., and Abd-Elaty, I.: Seepage loss from unlined, lined, and cracked-lined canals: a case study of Ismailia canal reach from 28.00–49.00 Km, Egypt, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-13134, https://doi.org/10.5194/egusphere-egu22-13134, 2022.

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