Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
CUT SLOPE COLLAPSE PREDICTION DEVICE, CUT SLOPE COLLAPSE PREDICTION METHOD, AND CUT SLOPE COLLAPSE PREDICTION PROGRAM
To provide a method and a program for accurately predicting the collapse of a cut slope due to water on a road surface above the cut slope.SOLUTION: A cut slope collapse prediction device derives maximum average significant rainfall intensity r(t) as a maximum outflow quantity qfor a cut slope. The maximum average significant rainfall intensity r(t) corresponds to an intersection of: a curve that indicates the relationship between rainfall duration t and maximum average significant rainfall intensity r(t); and a curve that is based on an equation that represents a flow time tfor a Manning formula slope flow in Kinetic outflow model. For the curve that indicates the relationship between the rainfall duration t and maximum average significant rainfall intensity r(t), the lateral axis is the rainfall duration t that is calculated based on rainfall information when the cut slope collapsed in the past, and the vertical axis is the maximum average significant rainfall intensity r(t) within the rainfall duration t. The cut slope collapse prediction device determines whether there is a possibility of the collapse of a prediction targeted cut slope based on: the maximum average significant rainfall intensity r(t) in the rainfall duration t that is calculated continuously based on rainfall information for a predetermined region including the prediction targeted cut slope; and the maximum outflow quantity q.SELECTED DRAWING: Figure 3
【課題】切取斜面上部の道路表面水による当該切取斜面の崩壊を的確に予測する方法及びプログラムを提供する。【解決手段】切取斜面崩壊予測装置は、過去の切取斜面の崩壊時における雨量情報に基づき算出された降雨継続時間ｔを横軸にとるとともに当該降雨継続時間ｔ内の最大平均有効降雨強度ｒｅ（ｔ）を縦軸にとったときの当該降雨継続時間ｔと当該最大平均有効降雨強度ｒｅ（ｔ）との関係を示す曲線と、Kinematic流出モデルにおけるマニング型の斜面流での流達時間ｔｃを表す次式に基づく曲線との交点に対応する最大平均有効降雨強度ｒｅ（ｔｃ）を当該切取斜面への最大流出単位高ｑｐとして導出し、予測対象の切取斜面を含む所定の領域の雨量情報に基づき逐次算出される降雨継続時間ｔ内の最大平均有効降雨強度ｒｅ（ｔ）と、前記最大流出単位高ｑｐとに基づいて、当該予測対象の切取斜面の崩壊のおそれの有無を判定する。【選択図】図３
CUT SLOPE COLLAPSE PREDICTION DEVICE, CUT SLOPE COLLAPSE PREDICTION METHOD, AND CUT SLOPE COLLAPSE PREDICTION PROGRAM
To provide a method and a program for accurately predicting the collapse of a cut slope due to water on a road surface above the cut slope.SOLUTION: A cut slope collapse prediction device derives maximum average significant rainfall intensity r(t) as a maximum outflow quantity qfor a cut slope. The maximum average significant rainfall intensity r(t) corresponds to an intersection of: a curve that indicates the relationship between rainfall duration t and maximum average significant rainfall intensity r(t); and a curve that is based on an equation that represents a flow time tfor a Manning formula slope flow in Kinetic outflow model. For the curve that indicates the relationship between the rainfall duration t and maximum average significant rainfall intensity r(t), the lateral axis is the rainfall duration t that is calculated based on rainfall information when the cut slope collapsed in the past, and the vertical axis is the maximum average significant rainfall intensity r(t) within the rainfall duration t. The cut slope collapse prediction device determines whether there is a possibility of the collapse of a prediction targeted cut slope based on: the maximum average significant rainfall intensity r(t) in the rainfall duration t that is calculated continuously based on rainfall information for a predetermined region including the prediction targeted cut slope; and the maximum outflow quantity q.SELECTED DRAWING: Figure 3
【課題】切取斜面上部の道路表面水による当該切取斜面の崩壊を的確に予測する方法及びプログラムを提供する。【解決手段】切取斜面崩壊予測装置は、過去の切取斜面の崩壊時における雨量情報に基づき算出された降雨継続時間ｔを横軸にとるとともに当該降雨継続時間ｔ内の最大平均有効降雨強度ｒｅ（ｔ）を縦軸にとったときの当該降雨継続時間ｔと当該最大平均有効降雨強度ｒｅ（ｔ）との関係を示す曲線と、Kinematic流出モデルにおけるマニング型の斜面流での流達時間ｔｃを表す次式に基づく曲線との交点に対応する最大平均有効降雨強度ｒｅ（ｔｃ）を当該切取斜面への最大流出単位高ｑｐとして導出し、予測対象の切取斜面を含む所定の領域の雨量情報に基づき逐次算出される降雨継続時間ｔ内の最大平均有効降雨強度ｒｅ（ｔ）と、前記最大流出単位高ｑｐとに基づいて、当該予測対象の切取斜面の崩壊のおそれの有無を判定する。【選択図】図３
CUT SLOPE COLLAPSE PREDICTION DEVICE, CUT SLOPE COLLAPSE PREDICTION METHOD, AND CUT SLOPE COLLAPSE PREDICTION PROGRAM
切取斜面崩壊予測装置、切取斜面崩壊予測方法及び切取斜面崩壊予測プログラム
UEMURA SHOICHI (Autor:in) / SUZUKI HIROTO (Autor:in)
30.04.2020
Patent
Elektronische Ressource
Japanisch
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