A STUDY ON A METHOD OF NON-LINEAR CRITICAL LINE FOR EACH SLOPE AND INSPECTION OF ITS FORECAST PRECISION

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  • KURAMOTO Kazumasa
    社団法人土木学会 中電技術コンサルタント株式会社河川部
  • MORIKAWA Osamu
    国土交通省中国地方整備局福山工事事務所 研究当時山口大学大学院理工学研究科
  • TETSUGA Hiromi
    山口県土木建築部砂防課傾斜地保全係
  • ARAKAWA Masao
    社団法人土木学会 香川大学工学部信頼性情報システム工学科
  • NAKAYAMA Hirotaka
    甲南大学理工学部情報システム工学科
  • FURUKAWA Kohei
    社団法人土木学会 山口大学工学部社会建設工学科

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Other Title
  • 斜面要因を考慮した斜面毎の非線形がけ崩れ発生限界雨量線の設定方法とその崩壊予測精度
  • シャメン ヨウイン オ コウリョ シタ シャメン ゴト ノ ヒセンケイ ガケクズレ ハッセイ ゲンカイ ウリョウセン ノ セッテイ ホウホウ ト ソノ ホウカイ ヨソク セイド

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Abstract

Conventionally, a critical line forecasting for predicting slope failures has been established with rainfall factors ignoring vital differences in degrees of slope failure risk for each slope. Besides, it is composed by linear function so that it despite the complex nature of slope failure. Thus, it does not achieve high level of precision. In this paper, in order to consider slope characteristics, we classify slopes into several groups and for each group we set non-linear critical line by using RBF network and obtain RBF parameters from their results. From these results and degree of slope failure risk, we give RBF parameters by considering statistical analysis to set non-linear critical line with considering degrees of slope failure risk. We demonstrate the effectiveness of the proposed method through comparison of the results with our previous studies.

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