ANALYSIS ON CHARACTERISTICS OF THE RAINFALLS CAUSING SLOPE FAILURES BASED ON ROUGH SET THEORY

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  • 山口県の安山岩・花崗岩斜面におけるがけ崩れ発生降雨の特徴分析
  • ヤマグチケン ノ アンザンガン カコウガン シャメン ニ オケル ガケクズレ ハッセイ コウウ ノ トクチョウ ブンセキ

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Abstract

In this paper, the methodology for detecting critical properties using rough set theory is applied to the rainfall data in Yamaguchi prefecture, for the purpose of analyzing the relationship between rainfall and slope failures. It is shown that there exist two types of slope failures, “immediate failures” and “late failures, ” in andesite slopes. On the other hand, “late failures” and “accidental failures” could happen in granite slopes. The result of χ2 test shows that there is no significant correlation between geological properties of slopes and the type of slope failures, in the data which can be obtained.

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