Study and application on comprehensive evaluation model of landslide hazard based on uncertainty measure theory

According to evaluation uncertainties of landslide hazard,hazard index condition of landslide geological disaster was studied.Fully considering various factors,based on information entropy and unascertained measure theory,rank-evaluating and order-arranging models of landslide hazard were established.Starting from practical geologic condition,15 factors that influence landslide hazard were taken into account,and uncertainty measure function was obtained based on the in-situ data.The uncertainty problems in evaluation of landslide hazard were solved by qualitative analysis and quantitative analysis respectively.Information entropy theory was used to calculate the index weight of factors,credible degree recognition criteria was used to judge rank of landslide hazard,and the order of hazard was arranged.This model was employed to evaluate 17 landslides in Yingxiu-Wolong highway of S303 line.The results show that uncertainty measure method is reasonable and can provide certain reference significance for landslide hazard evaluation in the future.