Abstract: Landslides on the slopes at both sides of the city expressway might have a significant impact on the safe operation of the roadway. It is therefore urgent to provide protective measures for areas that have landslide hazard potentials and provide mitigation measures for areas that have slides occurred. This paper provides a case history of landslides at a city expressway in South China. The characteristics of the landslide projects are introduced and the key aspects of the mitigations are proposed. The landslide process was simulated with the finite element method. The numerical analysis indicates that the landslide mitigation method is effective and the safety hazard to the roadway has been eliminated.

Key words: Landslides, Landslide Mitigation, Slope Unloading, Numerical Analysis