Landslide Monitoring Technology in Zengjiapeng of Three Gorges Reservoir Area and the Comparison Analysis on Instability

Zengjiapeng landslide in Three Gorges reservoir area is one of the landslides with less instability,for which the professional monitoring history of 9 years was kept,including surface deformation,deep displacement and other means of monitoring.By the monitoring experience of many years,combining with the actual deformation and failure process of landslide,the analysis and evaluation are made on the practicability and scientific of various monitoring methods,which can provide scientific basis for the same type subsequent landslide monitoring work and make use of resources more concentrated and reasonable.The paper also puts forward reasonable suggestions on monitoring scheme of future.