Estudio experimental y numérico de la estabilidad de la pendiente aguas arriba en un embalse de presas de tierra en condiciones de extracción rápida
The rapid drawdown of the dam reservoir is one of the most common situations occurring in the lifetime of a dam. For this reason, one of the main factors in the design of the upstream slope is the rapid drainage of the reservoir. In this case, the upstream slope is in a critical condition and the slope may be unstable. When the water surface in the reservoir is drawdown suddenly, the water level in the dam body does not decrease at the same time as the reservoir water level. The analysis of seepage from the earth dam body and calculation of the water loss play an important role in calculating the amount of pore water pressure, and, consequently, the stability analysis of the dam body. In addition, any seepage analysis is dependent on the hydraulic properties of the dam materials. In order to investigate the effect of hydraulic conductivity on the rapid drawdown of water level and the seepage, an experimental model was constructed of an earth dam. By accurate measurement of hydraulic parameters of the materials in saturated and unsaturated media, the flow through this model was modeled using a disk penetrometer by seep/w software. The results were then compared with the observed data.
Ataie-Ashtiani B., Volker R. E. & Lockington D. A. 1999 Numerical and experimental study of seepage in unconfined aquifers with a periodic boundary condition. Journal of Hydrology, 222(1-4), 165-184. DOI: 10.1016/S0022-1694(99)00105-5.
Bardet J. P. & Tobita T. 2002 A practical method for solving free surface seepage problems. Journal of Computer and Geotechnics, 29(6), 451-475. DOI: 10.1016/S0266-352X(02)00003-4.
Ji C. N., Wang Y. Z. & Shi Y. 2005 Application of modified EP method in steady seepage analysis. Journal of Computer and Geotechnics, 32(1), 27-35. DOI: 10.1016/j.compgeo.2004.11.006.
Nansheng L., Bo T.& Lihui X. 2015 Slope stability analysis of earth-rockfill dams using MGA and UST. Journal of Computational Engineering, 2015. DOI: 10.1155/2015/895142.
Kahot z., Dkiouak R. & Khamlichi A. 2019 Reliability analysis of slope stability in earthen dams following rapid drawdown. International Review of Applied Sciences and Engineering, 10(1), 101-112. DOI: 10.1556/1848.2018.0011.
Calamak M & Yanmaz A. M. 2014 Probabilistic Assessment of slope stability for earth-fill dams having random soil parameters. 5th International Symposium on Hydraulic Structures. 25-27 June, Brisbane, Australia. DOI: 10.14264/uql.2014.16.
Fu J. & Jin S. 2009 A study on unsteady seepage flow through dam. Journal of Hydrodynamics, 21 (4), 499-504. DOI: 10.1016/S1001-6058(08)60176-6.
Ghanbarian-Alavijeh B., Liaghat A., Huang G. H. & Van Genuchten M. Th. 2010 Estimation of the van genuchten soil water retention properties from soil textural data. Pedosphere, 20 (4), 456-465. DOI: 10.1016/S1002-0160(10)60035-5.
Zhang Y. L., Chen R. & Li J. H. 2011 Evaluating the accuracy of unsaturated hydraulic conductivity determined by instantaneous profile method. In Proceedings of the 5th Asia-Pacific Conference on Unsaturated Soils, Kasetsart University, Pattaya, Thailand.
Reynolds W. D., Gregorich E. G. & Curnoe W. E. 1995 Characterisation of water transmission properties in tilled and untilled soils using tension infiltrometers. Soil Tillage Research, 33(2), 117-131.
White I., Sully M. J. & Perroux K. M. 1993 Measurement of surface-soil hydraulic properties: disk permeameters, tension infiltrometers and other techniques. In: Topp, G.C., Reynolds, W.D., Green, R.E. (Eds.), Advances in Measurement of Soil Physical Properties: Bringing Theory into Practice. Soil Science Society of America, Special Publication, 30, 69-104.
Sedghi-Asl M. H., Rahimi H. & Khaleghi H. 2010 Experimental analysis of seepage flow under coastal dikes. Experimental Techniques, 34(4), 49-54. DOI:10.1111/j.1747-1567.2009.00562.x.
Logsdon S. D. & Jaynes D. B. 1993 Methodology for determining hydraulic conductivity with tension infiltrometers. Soil Science Society of America Journal, 57(6), 1426-1431. DOI : 10.2136/sssaj1993.03615995005700060005x
Wooding R. A. 1968 Steady infiltration from a circular shallow circular pond. Water Resources Research, 4(6), 1259-1273. DOI: 10.1029/WR004i006p01259.
Gardner W. R. 1958 Some steady-state solutions of unsaturated moisture flow equations with application to evaporation from a water table. Soil Sciences. 85(4), 228-232.
Derechos de autor 2020 Revista Innovaciencia
Esta obra está bajo licencia internacional Creative Commons Reconocimiento-NoComercial 4.0.