Abstract: Based on the investigation of the geological hazards a slope failure in the north of Fujian Province is systematically evaluated in this paper. The failure mode, formation mechanism as well as the slope stability aspect has been analyzed. Also presented in the paper are some practical and pertinent failure countermeasures. The investigation indicates that the failure of the studied slope is the result of small-scale sliding mode and shallow landslide. In addition, the rock and soil slope bodies, topography of the inter-mountain depression, rainy and stormy climate as well as the human activities (such as excavation) with no support system also play important roles. Specifically, the stability of the slope would decrease remarkably due to the rainfall. The proposed mitigation measures of supporting slope surface by the ground anchor and the frame beam, applying gravity retaining wall for the support in severe collapse area as well as providing the drainage ditch (at the top and the bottom of the slope) and the drainage weep holes (on the slope surface) for the drainage improvement could effectively minimize the landslide related hazards. This paper provides the understanding of the formation mechanism of the geo-hazard of collapse and technical guidance to prevent landslides in the northern Fujian Province. 

Key words: Slopes, Landslides, Formation Mechanism, Failure Modes, Mitigation Measures