Page - 1242 - in Book of Full Papers - Symposium Hydro Engineering

REFERENCES [1] COWIE, H. AND CRAWLEY, J. The use of reverse circulation diaphragm walling technique to form a plastic cut-off wall around sizewell b. power station. Proceedings of the international conference on piling and deep foundations, London. 1989, pp. 193-198. [2] SHERWOOD, D., HARAN, C., AND BEYER M. Recent development in secant board pile wall construction. Proceedings of the international conference on piling and deep foundations, London. 1989, pp. 211-220. [3] PARAKASH, S. AND KUNAR S. Nonlinear lateral pile deflection prediction in sand. ASCE Journal of geotechnical engineering. 1996, Vol. 122, No. 2, pp. 130-138. [4] ALEM, A. AND BENAMAR, A. Graphs for the design of laterally loaded pile in clay. Electronic journal of geotechnical engineering. 2002, Vol. 7. [5] EL-ASHAAL, A., ABDEL-MOTALEB, A., AND HAGGAG, H. Stabilizing embankments made of and founded over weak soil using piles: a case history. Proceedings of the fourth international engineering conference, cairo university, Cairo, Egypt. 2000, pp. 415-426. [6] VAN IMPE, W. Development in pile design. Proceedings of the 4th international conference on piling and deep foundation, Stresa, Italy. 1994, pp. 727-758. [7] MCRAE, G. B. AND SIMMONDS, T. Long term stability of vibrating wire instrumented: one manufactures perspective. Proceedings of the 3rd international symposium in field measurements in geo-mechanics, Oslo. 1991, pp 283-293. SUMMARY In recent decades great attention was directed toward reclamation of new areas close to the Nile valley in Egypt. North of the Nile delta is one area that has a great potential for developing. Deep deposits of soft clay form an obstacle for such developing process. The embankments of a major canal were made of uncompacted marine deposits and founded over soft clay soil in the north of Egypt. Peat lenses caused slope instability and the sand and Gypsum lenses increased seepage potential and resulted in piping downstream the embankments. The present paper represent the measurements of a monitoring system used to evaluate the performance of an upgrading system of the poorly compacted embankment founded on soft clay. The upgrading is to be achieved through two systems of pile. The first system is meant to handle internal seepage problem while the other is utilized to provide extra stability for the embankment. In the present paper, the monitoring data of the secant-pile wall is presented, discussed, and analyzed. The monitoring system helped to evaluate the performance of the different components of the secant-pile wall. The relative 1242