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Abstract The detailed analyses of the geological conditions of the Xiluodu arch dam foundation under stress- seepage coupling are carried out. Based on field monitoring data，the paper tries to understand the mechanism of seepage coupling in the foundation of Xiluodu dam，where seepage pressure and water level fluctuation are considered. In this paper，the seepage parameters and boundary conditions are determined based on the seepage simulations in combination of field monitoring. The relationship between permeability and stress-deformation is established. By using the nonlinear finite element method，the integrity seepage stability of dam foundation in the typical stages of construction period is numerically studied. Based on the deformations and compressive stresses obtained by numerical simulations and field monitoring data，the seepage state of the dam foundation during construction is obtained. Next，seepage stabilities of dam during operation period are predicted，which may be employed for seepage controlling system of the dam site. Finally，it is noted that the safety and construction quality of the dam during impounding process should be ensured.
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Received: 11 January 2013
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2013, Vol. 32 
