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Investigation on Pore Water Pressure in Core of Karkheh Dam

Authors: Ali Gholami, Bahar Razavi, Mansour Parehkar

Abstract:

Pore water pressure is normally because of consolidation, compaction and water level fluctuation on reservoir. Measuring, controlling and analyzing of pore water pressure have significant importance in both of construction and operation period. Since end of 2002, (dam start up) nature of KARKHEH dam has been analyzed by using the gathered information from instrumentation system of dam. In this lecture dam condition after start up have been analyzed by using the gathered data from located piezometers in core of dam. According to TERZAGHI equation and records of piezometers, consolidation lasted around five years during early years of construction stage, and current pore water pressure in core of dam is caused by water level fluctuation in reservoir. Although there is time lag between water level fluctuation and results of piezometers. These time lags have been checked and the results clearly show that one of the most important causes of it is distance between piezometer and reservoir.

Keywords: Reservoir, consolidation, earth dam, Piezometer, Terzaghi

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1335522

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References:


[1] A. Mahbobi. Applied soil physics. Boali University. Hamedan.2005. pp.68-70.
[2] E.E. Alonso. D, Lautrin. D. Poulain, P. Brunel. H. Miller. P. Vigneau and M. Lino. Construction Pore Pressures in Earth dams. In Conf. 1995 (in French), Unsaturated Soils. Proc. 1st Int. Conf. on Unsaturated Soils (UNSAT 95), Paris, France (ed. Alonzo, E.E. and Delage, P.), Rotterdam: Balkema, Vol. 1, pp. 251-256.
[3] G. Aghajani. General Irrigation, Unpublished.
[4] H. Rahimi. Earth dams, Tehran University, Tehran.1989.
[5] J.K. Mitchell. Components of pore pressure and their engineering significance. Ninth national conf. on clays and clay minerals: university of California, Berkley. 1998.
[6] J.W.Hilf . Estimating Construction Pore Pressure in Rolled Earth Dams, Porc.ΙΙ Int. 1948.Conf. on Soil Mech. and Found. Eng, Vol. ΙΙΙ, p.p. 234-240.
[7] K.Najm. Instrument in dams. Forth conference on dam structure, Tehran.1999.
[8] K.Terzaghi. Theoretical soil mechanics, Willey, New York,1962.pp. 304-305.
[9] M. Braja. Advanced Soil Mechanics, New York. 2008.
[10] M. Pakzad. Evaluation of pure water pressure in Karkheh dam. in Forth conf.1999. On dam structure, Tehran.
[11] M. Pakzad. "Report of Karkheh dam structure", Unpublished.
[12] R, Ebnjalal. Soil Mechanics, Chamran University, Ahwaz, 2006, pp. 123-125.