Abstract: The high slope of a highway in Hubei Province was deformed and damaged at the cut area. For construction safety and minimizing the community impact, highway slope hazards within this section are in an urgent need of mitigation. The slope deformation data were collected, the geological and hydrological conditions ate the potential sliding body were investigated and the stability was evaluated. The landslide mitigation measures were also designed and implemented. The results show that high slope deformation hazards are still in the development stage. The slope is in an unstable state under the heavy precipitation, continuous rainfall and under the seismic conditions. As comprehensive mitigation measures, the steel pipe pile as antisliding pile, railway track steel segment as the retaining wall toe protection, seal off cracks at surface and promoting drainage were applied.

Key words: high slope, contribution factors, deformation characteristics, stability, mitigation measures