Assessment of geo-hazards susceptibility in reservoir of Ludila Hydropower Station, Jinsha River

The high mountain gorge areas of Southwest China are areas where geo-hazards are easy-happening.By the research on geo-hazards in typical river sector,we can grasp the regularity of geo-hazards' distribution in Jinsha River.This paper takes the reservoir of Ludila Hydropower Station for example,It is based on the analysis of surveying geo-hazards,and carefully considers the internal relations between the river and the geo-hazards using the Logistic regression model and GIS spatial analysis tools.Furthermore,the paper selects 5 key factors(independents) including the surface runoff erod,Engineering geology petrofabric,the shape of river valley,the grade of bank slope,the aspect of bank slope are well contributed to the occurrence of geo-hazards.The predicted result using a logistic model with key factors shows that geo-hazards susceptibility of reservoir is very high.High geo-hazards susceptibility areas accounte for 41% and mainly concentrate in the first sector of reservoir and around Duomei.The result can better illuminate the present features of the reservoir geo-hazards distribution.which can provided the scientific information for prevention of geological and monitor geo-hazards.