SOLUTIONS PROPOSED FOR THE NAVIGATION PROBLEM DOWNSTREAM ZEFTA BARRAGES

Fahmy, Wail Ahmed; Hekal, Nasr Tawfik Hassan

doi:10.21608/jesaun.2020.40660.1006

SOLUTIONS PROPOSED FOR THE NAVIGATION PROBLEM DOWNSTREAM ZEFTA BARRAGES

Document Type : Research Paper

Authors

¹ Civil Engineering, Faculty of Engineering, Shoubra Branch, Benha University

² River Engineering Dept., Nile Research Institute, National Water Research Center, Ministry of Water Resources and Irrigation

10.21608/jesaun.2020.40660.1006

Abstract

The Nile navigable Damietta branch extends between Cairo and Damietta open seaport on the Mediterranean. For safe navigation throughout the branch, a 2.30 m minimum flow depth (MFD) is required. A recovery project to improve the branch navigation was started in 1999 and completed in 2005. The project was to implement a 40 m wide navigable waterway. About 6.50 million m3 of bed materials had been removed from bottlenecks at $ 18.20 million cost. In 2003, the construction of a new lock of 150.0 m length, 17.0 m width and (1.50) m bed level was completed on Zefta Barrages (ZB) east side to meet the navigation requirements. The barrages are located at Km 119.625 downstream (D/S) El-Roda Gauge in Cairo. However, the resulting water stage (WS) D/S (ZB) during low discharges was insufficient to provide the MFD. Field studies were conducted to reveal the reasons. They found the branch flow carrying capacity had increased due to excessive dredging which caused a decline in WSs D/S (ZB). Analyzing the hydrologic and topographic conditions, two solution concepts were reached; either to raise the WS by 0.70 m or to lower the bed level of the diversion channel located D/S the new lock by 1.0 m. Therefore, this study aims to introduce solutions to overcome the problem. The solutions are to use a D/S rubber weir for raising the WS or construct a new lock within the D/S diversion channel for lowering the bed level or build new barrages with a new lock.

Keywords

Main Subjects

Civil Engineering: structural, Geotechnical, reinforced concrete and steel structures, Surveying, Road and traffic engineering, water resources, Irrigation structures, Environmental and sanitary engineering, Hydraulic, Railway, construction Management.

References

[1] NRI, (1975-2020), "River Nile Study Reports", Library, El-Qanater, Cairo, Egypt.

[2] Google Earth Imagery April 2020.

[3] Sadek, N., Abd El-Fadil, M., El-Barbary, Z., and Fahmy, A., (2008), "Morphological Change Impacts on Damietta Branch Capacity". Water Research Center Journal, June 2008, Cairo, Egypt.

[4] Sadek, N., and Hekal, N., (2008), "Prediction of the Future Situation of the River Nile Navigational Path". The 12^th International Water Technology Conference Proceedings. Alexandria, Egypt. pp. 323-336.

[5] Negm, A.M., (2011), "Impact of Future Discharges on Damietta Branch Morphology", Conference: IWTC15, Alex. Egypt. DOI: 10.13140/2.1.1248.5449

[6] Nile Research Institute "NRI" Report, (2005), "Studying the Operational Rules of Damietta Branch Navigational Waterway". Report # 28, Sept. 2005, National Water Research Center, El Qanater, Cairo, Egypt.

[7] NRI, (2005), "Establishing Operational rules to solve navigation problems in Dammietta branch", Arabic Report, Aug. 2005.

[8] Raslan, Y., Sadek, N., and Attia, K., (2009), "Impact of Navigation Development on Damietta Branch", Water Research Center Journal, Issue 46, pp. 87-101, Cairo, Egypt, 2009.

[9] Ezzat, A.S., (2010), "Hydraulic Hazards for Operating Navigation Channel in Damietta Branch", M.Sc. Thesis, Benha University, Shoubra Faculty of Engineering, Irrigation and Hydraulics Department, (2010).

[10] Attia, K., El-Belassy, A., El-Saeed, G. and Ezzat, A.S., (2010), "Simulation of River Regulation Works to Improve Navigation Conditions in Damietta Branch", Nile Water Science and Engineering Journal, The Nile Basin Capacity Building, (2010).

[11] Kamel, H. H., (2014), "Improving Inland Navigation of Damietta Branch", M.Sc. Thesis, Faculty of Engineering, Shebin El-Kom University, (2014).

[12] Sadek, N., Salama, R. and Kamal, N., (2015), "Effect of Bank Erosion and Bend Types on the Efficiency of Damietta Branch Navigation Path", International Water Technology Journal, IWTJ, Vol. 5 – No. 2, June 2015.

[13] BIC Rubber Dam, Beijing IWHR Corporation, (2020), http://www.environmental-expert.com/products/keyword-rubber-dam-97400.

[14] Zaoqiangdacheng Rubber Co., Ltd. (2020), Http://Www.Rubberdam.Org.

[15] Abdel-Fadil, A.M., (2017), "Comparative Study for Nasser Lake Khores Closure by Different Types of Dams", M.Sc. Thesis, Helwan University, Faculty of Engineering, Irrigation and Hydraulics Department, (2017).

[16] Arun Kumar, and Shahid ul Islam, (2019), "Hydraulic Rubber Dam", Science Direct, a Book, Chapter 6, "Inflation and Deflation of Rubber Dam", (2019)

[17] Chinese Alibaba Company for Manufacturing Rubber dams and weirs, (2020), https://www.alibaba.com/product-detail/Water-inflatable-rubber-weir_1031974296.html? spm=a2700.details. maylikeexp.7.3641784apnohys.

[18] DACHENG RUBBER CO., LTD, (2020), Https://www.inflatabledam.com/project/index.html