Affiliations: [a] Key Laboratory of Coalbed Methane Resources and Reservoir Formation Process of the Ministry of Education, China University of Mining and Technology, Xuzhou, Jiangsu, China
| [b] School of Civil and Architecture Engineering, East China University of Technology, Nanchang, Jiangxi, China
Abstract: Landslide hazard assessment generally involves multiple factors and indexes. Based on the theory of extenics with matter-element concept, a method applying the fuzzy extension analytic hierarchy process (EAHP) method is proposed for the comprehensive evaluation of landslide hazard. It can quantitatively show the relative important degree between indexes with the extension interval number. Taking the geological hazards of actual landslide as an example, based upon geological survey and characteristic analysis of landslide field, the author selected 10 influencing factors to analyze the weight of the evaluation index of each level. Through the extension interval judging matrix of evaluation index constructed by the experts, the weight of the indexes was identified and the landslide risk was evaluated step by step with membership function of fuzzy set. The correlation degree of the maximum value was calculated as 0.472, the landslide risk was valued as grade 4, in an unstable state, and at the same time, some feasible measures were put forward to control landslide. The research as described in the paper shows that the fuzzy EAHP method is valid for landslide hazard evaluation.
Keywords: Landslide, fuzzy, extension theory, analytic hierarchy process (AHP), weight
