Assessment of failure susceptibility of soil slopes using fuzzy logic

  • Saboya F
  • da Glória Alves M
  • Dias Pinto W
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Abstract

Generally, the process of land occupation in urban areas involves spaces that are not suitable for construction. In most cases these areas are subject to landslides. Therefore it is mister the development of models to evaluate the susceptibility of occurrence of landslides in these areas. For this, Fuzzy Logic is used herein for modeling such areas where landslides are susceptible to occur and, therefore, a direct evaluation is important. The possibility of capturing the judgment and the modeling of linguistic variables are the main advantages of using Fuzzy Logic. These models are capable to capture the factors directly affecting the slope stability and also the inter-relationship amongst them. These factors were chosen by experts to whom a questionnaire was sent. Fuzzy Logic was then used to transform the linguistic variables into fuzzy number, allowing thus, the calculation of failure potential index (FPI). Herein the MAX-MIN Mamdani strategy for the inference of the rule base was used. This methodology has been applied to identify the susceptibility of landslides in a chaotic occupied urban area of Itaperuna City in northeastern of Rio de Janeiro, Brazil, where some occurrences have been reported. © 2006 Elsevier B.V. All rights reserved.

Author-supplied keywords

  • Fuzzy logic
  • Soil slope
  • Susceptibility mapping

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Authors

  • Fernando Saboya

  • Maria da Glória Alves

  • Wendell Dias Pinto

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