Debris Flow Hazard Evaluation Method Based on EW-AHP Modified Unconfirmed Measure Theory
This paper discusses the shortcomings and errors of the index weighting method in assessing the risk of thunderstorms and gives the example of thunderstorms in Dawangou,Liangshui Village,Wudu District,Longnan City,Gansu Province.In accordance with the characteristics of this geological environment,seven factors are selected as the index for flash flood risk assessment,including the maximum discharge of flash flood,the catchment area,the length of the catchment,the relative difference in the height of the catchment area,the ratio of the length of the sediment flow section,the maximum rainfall in 24 hours,and the population density.To determine the index weights,a combined EW-AHP weighting method will be adopted,and a single-hook storm water hazard assessment model based on uncertain dimensional theory will be developed.The results of the landslide risk assessment in the study area show that the results are consistent with the results of the field survey,taking into account the overall subjective and objective weighting of the assessment indicators,indicating the reasonableness and validity of the assessment methodology.This provides a new approach for future landslide risk assessment.
国家科技期刊平台
NSTL
万方数据
维普
