Based On The Surface Displacement Of Landslide Stability Evaluation And Early Warning Threshold Discussed

Landslide is a serious geological disaster, at the same time, but also one of the most widely distributed and occur most frequently national geological disasters and the extent of the worst landslide in the world. Each year due to geological disasters such as landslides during the economic losses caused by up to billions of yuan, killed hundreds of people, the country's economic development and people's life and property security caused great threat. Hence, the monitoring and early warning and the stability of the landslide disaster evaluation also gradually become a widespread concern.In monomer landslide stability eval uation, the displacement is the most intuitive reflect the state of landslide stability, and the deformation measurement method is simple, so it aroused people's more and more attention in the landslide monitoring and early warning. With the rapid development of real time positioning technology, is given priority to with displacement law of time- the statistical analysis of forecast stage have replaced the mainly phenomenon forecast and empirical equation of traditional landslide stability analysis phase, is developing toward a comprehensive early warning forecast research stage.In Dujiangyan city of Sichuan province Taziping landslide as the research object, based on the deformation law of displacement of landslide surface-time curve, combined with field monitoring data of the landslide tangential angle are analyzed, thus divided into landslide's deformation stage. Based on the surface of the landslide displacement rule and macroscopic deformation situation to analyze the deformation mechanism of landslide and determine its migration forms. Combined with the migration mechanism of landslide of landslide reinforcement landslide. And through the data before and after the landslide reinforcement, demonstrated the feasibility of the landslide gravity retain ing wall governance approach, and it is concluded that the landslide after reinforcement has stable state.