A STUDY ON A METHOD FOR DETERMING CRITICAL LINE USING GIOMORPHOLOGICAL FACTORS OF SLOPE FAILURES DURING HEAVY RAINFALL

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  • 急傾斜地における斜面要因を考慮したがけ崩れ発生限界雨量線の設定手法に関する研究
  • キュウケイシャチ ニ オケル シャメン ヨウイン オ コウリョ シタ ガケクズレ ハッセイ ゲンカイ ウリョウセン ノ セッテイ シュホウ ニ カンスル ケンキュウ

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Abstract

In conventional research, precision forecasting of slope failures during heavy rainfall using critical rainfall line is not so accurate, because it used only rainfall factors for forecasting. In this research, the slope failure prediction system using both rainfall factors and geomorphological factors is constructed based on multiple discriminate analysis. Then we determined the critical rainfall line and try to improve the precision forecasting. The result shows that the precision had improved more than 80% in forecasting.

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