Effect of the Height of Crack in the Slab of CFRD’s in Water Pressure Distribution in the Dam Body

Seepage and stability analyses of two cross-sections of concrete face rock-fill dams , homogeneous and zoned embankments, are investigated in the present study due to cracking of concrete slab. Seepage and stability analyses are investigated by using software, Geostudio. Results of analyses show that the phreatic line under concrete slab starts from a point higher than the elevation of the crack. In this condition, stability analyses in homogeneous dam shows that with increase in the crack height, safety factor of the slope stability decreases; while in non-homogeneous dams, phreatic line and safety factor do not change very much in accordance to the great capacity of drainage zone, which cause phreatic line to be at its lowest level

Keywords:

Concrete Face rock-fill Dam , Crack , Numerical Modeling , Seepage , Soil stability