Study on three dimensional numerical simulation of seepage field of dam with dense drainage holes under sudden drop of water level

The drainage effect of dense drainage holes and three dimensional seepage field distribution under sudden drop of water level are key problems concerned by engineering designers for seepage of dam slope collocated dense drainage holes on it.According to seepage of drainage holes collocated on dam slope,the treatment method of seepage state variation under sudden drop of water level is provided.The key techniques to simulated drainage holes accurately,including the improved cut-off negative press...