Improved transfer coefficient method for landslide stability evaluation based on reservoir bank slope characteristics

Abstract

With the implementation of low-carbon energy, the construction of a large number of hydropower stations has caused a large number of reservoir bank landslides. Reservoir bank landslides are significantly different from ordinary landslides, but in the process of actual engineering stability calculations, engineers still confuse the two and use the same ideas and methods for research. In order to better control the reservoir bank slope instability, according to the characteristics of the reservoir bank slope, and long-term field geological survey and indoor literature research, this paper puts forward the principle of reservoir bank slope zoning according to the structural surface characteristics, slope position and landslide material composition. According to the characteristics of reservoir bank landslide, the stability calculation formulas of traction landslide is derived in three cases: the traction section has thrust + the trailing edge tensile fracture surface has shear force, the traction section does not have thrust + the trailing edge tensile fracture surface has shear force, and the traction section does not have thrust + the trailing edge tensile fracture surface has no shear force. Combined with engineering examples, the improved transfer coefficient method for landslide stability evaluation based on reservoir bank slope characteristics is verified.

Keywords

• reservoir bank landslide
• partition principle
• calculation method
• retrogressive landslide