AHPによる新しい斜面崩壊調査法の提案

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  • Proposal for a New Method on Slope Failures Survey by AHP
  • AHP ニ ヨル アタラシイ シャメン ホウカイ チョウサホウ ノ テイアン

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Abstract This paper proposes a new method on slope failures survey by AHP (Analytic Hierarchy Process). The purpose of AHP is to evaluate numerically the experiential judgement by weighting. The clearness of each factor of slope failures is ranked from (1) (unclear) to (5) (clear) by field observations. The hierarchical structure model consists of 5 levels. Level I is a definition of the basic purpose for the forecasting and prevention of slope fail-ures. Level II is the estimation of the effect of each factor contributing to slope failures. Level III is the forecast-ing of occurrence of slope failures. Level IV is the forecasting of the size of slope failures. Level V is the judgement for suitability of the prevention works. The author examined the utility value of AHP method on the slope failures survey, and point out the following merits of AHP, better than the normal experiential iudaements:<BR>(1) AHP gives quantitative support to qualititative field observations as a matter of degree, and makes the proc-ess of the technological judgements quite obvious.<BR>(2) AHP helps control numerous slopes which have a potential to failure, such as the order of necessity, the priority of prevention works, and so on.<BR>(3) AHP helps toward reduction of individual variation and speeding up of slope failures survey, and so on, through a simple method by dealing with personal computer.

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  • 地すべり

    地すべり 36 (1), 4-11_1, 1999

    公益社団法人 日本地すべり学会

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