Seepage Numerical Caculation Of Earth-rock Dam On Infinite Deep Pervious Foundation With Horizontal Impervious Blanket

In earth-rock dams research, the security of earth-rock dams is always the hot topic andthe seepage is the most important influence factor in all factors resulting in earth-rock damsdestruction. Therefore seepage problem of earth-rock dam arouses focus of the damengineering field attation increasingly. The earth-rock dam is the main part of thr country'sreservoir dam.The existing seepage control theories to infinite deep pervious foundation arenot maturity and perfect.At discussing the seepage control on infinite deep pervious foundation.This paper makesuse of direct boundary element method on discussing the seepage control of dam foundation,and build up mathematics model.The difficult of the problem arise the part of boundary zoneto simulate with difficulty,while slving horizontal impervious blanket seepage controlproblem.According to basic principle of direct boundary element method,this paper proposethat we can find out one boundary zone under the basi of the dam. When figures out the valuethat take this boundary as the model and the actual value compare approaches very muchtime.In the meantime we will discuss the influence of impervious blanket's length forearth-rock's seepage on infinite deep pervious foundation. At the end of this paper,wediscussing advantage and fault of three method that caclculate seepage problem: finiteelement method ,direct boundary element method,boundary point method.