STATISTICAL RISK ESTIMATING METHOD FOR RAINFALL ON SURFACE COLLAPSE OF A CUT SLOPE

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概要

• 論文の詳細を見る

• Slope collapse for embankments and cut slopes on railways generally occur during heavy rainfall from typhoons etc. and have a strong influence on running safety of trains. Risky locations along the railway right of way must be identified to control railway operations based on the conditions and characteristics for each railway line. For this purpose, a practical damage estimation method, which accurately predicts the hazard of slope collapse and can be used simply by railway workers, has been developed. This paper deals with this method of risk estimation for a surface collapse of a cut slope during times of heavy rainfall using a multivariate analysis. The critical rainfall is obtained using a combination of an accumulated rainfall and an hourly rainfall, which have the powers 0.2 and 0.9 respectively. The critical rainfall is then determined from external variables such as geometrical and structural configuration of the cut slope, subsurface soil and rock conditions, catchment condition and experiential rainfall condition. It was determined that the hourly rainfall has more influence than the accumulated rainfall on the surface collapse of cut slopes. Since it was confirmed that this risk estimation standard agreed with some values observed for the surface collapses, it is suggested that the method can be used not only for planning the disaster prevention along railway right-of-way but also for predicting of the cut slope collapse due to heavy rainfall.

• 社団法人地盤工学会の論文
• 1994-09-15

著者

• 野口 達雄

  (財)鉄道総合技術研究所 事業推進室

• 杉山 友康

  Geological Hazards Prevention Group, Railway Technical Research Institute

• 佐溝 昌彦

  Geological Hazards Prevention Group, Railway Technical Research Institute

• 岡田 勝也

  Track and Structural Research Division, Railway Technical Research Institute

• 村石 尚

  Geology and Disaster Prevention Laboratory, Railway Technical Research Institute

• 野口 達雄

  Geology and Disaster Prevention Laboratory, Railway Technical Research Institute

関連論文

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• 鉄道における斜面災害とその対応策
• 盛土表層部の土質強度に関する異種のサウンディング試験結果の相関
• CORRELATIONS BETWEEN SOIL STRENGTH OF EMBANKMENT SURFACE USING DIFFERENT SOUNDING TESTS
• 切取り斜面の深層崩壊に関する降雨災害危険度評価手法
• STATISTICAL RAINFALL RISK ESTIMATING METHOD FOR A DEEP COLLAPSE OF A CUT SLOPE
• 統計的手法による切取り法面の表層崩壊の降雨危険度評価手法の提案(『土質工学会論文報告集』Vol.34,No.3(1994年9月発行)掲載論文の概要)
• STATISTICAL RISK ESTIMATING METHOD FOR RAINFALL ON SURFACE COLLAPSE OF A CUT SLOPE
• 2192.盛土表層部の土質強度に関する異種のサウンディング試験結果の相関性
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