PRELIMINARY STUDY ON CLASSIFICATION AND IDENTIFICATION OF TOPPLINGS IN HYDROPOWER PROJECTS

As a complex geology, there is no systematic research on the toppling classification until now. Based on the development characteristics investigation of typical topplings in western hydropower projects, the topplings are classified across two dimensions:single factor and multiple factors. Rock formation tendency, genesis, deformation position and deformation stage are used as single-factor classification basis. Lithology combination and rock mass structure, slope structure, deformation failure mode are taken as multi-factor classification basis. This paper also carries out a primary research on the deformation aging classification for a toppling. The analytical approach above provides a new orientation for the toppling field identification and systematic classification. Take the classification result on the basis of deformation failure mode as the base name for a toppling to define, while others as the additional modification for comprehensive name. This new naming method can reflect the feature information of a toppling more comprehensively.