Abstract: The Sunjiawan Landslide is occurred in the EcoFriendly Immigration Industrial Park in Fengjie County, Chongqing City. It is located at the right bank of the Shima River which is a tributary of the Caotang River. The landslide location is also within the operational pool water level. The triggering factors of the landslide were evaluated based on the geotechnical, physiographical and hydrological investigations and the stability was analyzed at cross section SJW33 by using a commercial software. The results indicate that the slope could be stable at the normal operation conditions, however, Local failure at the existing landslide when a rapid drawdown condition occurred at a pool water level elevation of 175 m. Under the extreme conditions, circular failure mode might be triggered. Appropriate engineering mitigation measures are necessary.

Key words: Eco-Friendly Immigration Industrial Park, Sunjiayuan Landslide, Slope Stability Analysis