NinFua Reservior Dam Seepage Flow And Stable Analysis

The theory of seepage deformation and seepage failure has been a most important problem for a long time in the dyke research. Seepage failure causes great loss to our national economy, it have been given much attention. How to recognize the dam seepage and seepage failure type and calculate seepage of dam is very importance.In this paper, the author first reviews the newly occurred damage of embanknebt failure at home and abroad. In a great degree, the most damage of embanknebt failure is caused by seepage failure. The article major talks about the earth seepage failure type and the theory of limited cell seepage flow calculation. And about to establish the finite element seepage flow model. The earth seepage failure includes four types. It's about mass flow, piping, contact mass flow, contact rush. According the type of seepage failure, analysis the model of contact rush seepage failure, deduce coefficient of percolation and groundwater flow field of contact rush. Details analyze different type of seepage failure mechanism, and analyze the reason of affect osmosis of the incoherent earth from microscopic study. According to theory of basis seepage flow, conservation of mass, seepage flow equation of continuity, deduce seepage flow differential equation. Solve seepage flow differential equation by principal of variation, establish calculation formula of finite element solve seepage flow during a series of mathematics deduction.At last, based the theory of seepage flow and finite element calculation, the author calculate seepage flow of reservoir dam of NinFua under bridge by the different case, analysis and research which type of seepage failure occurred reservoir dam of NinFua under bridge, calculate equipotential line and amount of leakage of reservoir dam at the different case, and calculate the hydraulic grade and amount of leakage of reservoir dam, analysis the stable of reservoir dam at the different case. According to seepage calculate we find that it's unstable seepage in the reservoir dam of NinFua, and it's exist convergence seepage in the dam. Also a great of seepage will make the reservoir dam of NinFua to peril.