In anti-sliding pile designing for Reservoir landslide improvement

the reasonable pile position determination is very important

which effects the engineering safety and cost. Taking Zhanghuanhoumiao east landslide for example

based on the engineering geological condition investigation and with the GeoStudio software

according to the reservoir operation curve

considering 4 different pile positions

the numerical simulations were done. The results show that: ① When water level rising up

the displacement of front edge decreases

but the displacement of back edge increases. The maximum displacement of the front edge appears during water level drawing down and lowest water level. The maximum. displacement of the back edge appears during water level rising up and the highest water level. ② The reasonable pile position for the back

front and middle of the landslide are separately Ⅰ

Ⅱ pile positions. I pile is at the 175m

which residual pushing force is maximum the best pile is Ⅱ pile position

which is 130m from the shearing out point of landslide. At last

considering the influence of the water level fluctuation

the modified method of the safety factor for the anti-sliding pile design is presented

which will be important to the anti-sliding pile design for reservoir landslide.