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Development of an Evaluation Chart for Landslide Susceptibility using the AHP Analysis Method  

Chae, Byung-Gon (Geologic Environment Research Division, Korea Institute of Geoscience and Mineral Resources)
Cho, Yong-Chan (Geologic Environment Research Division, Korea Institute of Geoscience and Mineral Resources)
Song, Young-Suk (Geologic Environment Research Division, Korea Institute of Geoscience and Mineral Resources)
Seo, Yong-Seok (Depart. Of Earth and Environmental Sciences, Chung Buk National University)
Publication Information
The Journal of Engineering Geology / v.19, no.1, 2009 , pp. 99-108 More about this Journal
Abstract
Since the preexisting evaluation methods of landslide susceptibility take somehow long time to determine the slope stability based on the field survey and laboratory analysis, there are several problems to acquire immediate evaluation results in the field. In order to overcome the previously mentioned problems and incorrect evaluation results induced by some subjective evaluation criteria and methods, this study tried to develop a method of landslide susceptibility by a quantitative and objective evaluation approach based on the field survey. Therefore, this study developed an evaluation chart for landslide susceptibility on natural terrain using the AHP analysis method to predict landslide hazards on the field sites. The AHP analysis was performed by a questionnaire to several specialists who understands mechanism and influential factors of landslide. Based on the questionnaire, weighting values of criteria and alternatives to influence landslide triggering were determined by the AHP analysis. According to the scoring results of the analysed weighting values, slope angle is the most significant factor. Permeability, water contents, porosity, lithology, and elevation have the significance to the landslide susceptibility in a descending order. Based on the assigned scores of each criterion and alternatives of the criteria, an evaluation chart for landslide susceptibility was suggested. The evaluation chart makes it possible for a geologist to evaluate landslide susceptibility with a total score summed up each alternative score.
Keywords
landslide susceptibility; AHP analysis; evaluation criteria; weighting value; evaluation chart for susceptibility;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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