Tarek N. Salem, Mohsen M. A. Mashhour, Rana H. Rashad


Slope stability is one of the most important problems in geotechnical engineering because failure could cause catastrophic environmental and human disaster, in addition to large economical losses due to such failure. The purpose of this paper is to study the effect of using piles to stabilize the embankments of Al-Salam Canal in Northern Egypt. The canal left side is a formed soft clay embankment. The left side embankment is mainly formed from the dredging and cleaning of the bottom of the nearby Al-Manzala lake. Sudden and progressive failures took place in the left side over years. These failures are mainly due to the nature of the soft clay forming the slope in addition to the existence of gypsum and peat pockets and thin layers within the slope in many locations. Thus, it was suggested to use reinforced concrete piles to stabilize the left side embankment of the canal. Analysis of the slope stabilized by piles is performed using the finite element analysis program (Phase2). Although the slope stabilizing piles are able to stabilize the slope, but increasing the number of pile rows was not effective in increasing the safety factor in return. Another slope stabilizing technique is studied herein using lime treatment. The proposed lime treatment was effective in stabilizing the slope more than the slope stabilizing piles, and even in the zones containing the peat layer


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