Analysis on influence of weak fractured zones on deformation and stability of a right dam-abutment by FLAC~(3D)

There are many weak fractured zones and net-cracks inside a right damabutment at a hydro-electrical power station.In order to evaluate their influences to deformation and stability of the right dam-abutment,the method of FLAC~(3D)(Vision 2.0) study is carried out on the basis of analysis on the geological conditions.It is shown that total deformation of the right dam-abutment is small, and the differential deformation between two dam-abutments is also small.The deformation of the right dam-abutment decreases rapidly as time-step under rock-fill dam load or dam and reservoir load.There is no obvious influence of the weak fractured zones on deformation and stability of a right dam-abutment.