Causes and Stability Evaluation of a Large Landslide in Nanjing

Abstract

Through the geological survey in the field, the development characteristics of landslide landslides are systematically analyzed. Through the simulation of the influence of different factors on the stability, it is determined that the main reason for the sliding of the landslide is the heavy rainfall and the slope cutting, which reveals the geological origin and mechanical origin of the landslide body. The limit equilibrium theory is used to analyze the stability and residual sliding force of different potential sliding surfaces. For the three-row anchored anti-slide pile + profile prestressed frame anchor cable + drainage system emergency reinforcement measures adopted by the owner, the stability factor of the landslide body is demonstrated after emergency reinforcement. The research shows that although the corresponding reinforcement measures are taken, the landslide body still does not meet the safety requirements, and further deep reinforcement measures must be taken for treatment. The research results provide a theoretical basis for the reinforcement design of the landslide body.