Background Factors Analysis and Risk Evaluation Based on Fuzzy Theory in Wenchuan Seismic Landslides

Abstract:

Earthquake is one of the most important external factors causes landslide, the geological and topographical conditions of the slope itself is the most important internal factors which induce landslide on landslide’s size and probability. These factors can be described as background factors impact the seismic landslides. Through the analysis and statistics on seismic landslides’ data in this paper, five directions were studied. These are lithology, slope height, slope angel, slope shape and slope direction. The influence features on number, area and volume of the five background factors show the contribution rate and risk degree. Using fuzzy theory to carry out quantitative and semi-quantitative analysis on these factors, the weights of the five background factors can be determined. Then using the risk evaluation on a specific landslide according to the principle of maximum membership, the result shows this method is reasonable.

• Periodical: Applied Mechanics and Materials (Volumes 204-208)
• Pages: 2698-2704
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.204-208.2698
• Online since: October 2012
• Authors: Meng Han*, Xiao Yi Fan, Jian Ping Qiao
• Keywords: Background Factors, Contribution Rate, Fuzzy Theory, Risk Evaluation, Seismic Landslide

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