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A platform for research: civil engineering, architecture and urbanism
SYSTEM FOR ESTIMATING TIME LANDSLIDE OCCURS
To provide a system for estimating the time a landslide is highly likely to occur due to rain.SOLUTION: A pressure head calculation unit 1110 calculates a pressure head by times for each cell in a monitoring region that is for supplying water flowing into evaluated dangerous cells when it rains. A stability index calculation unit 1111 calculates a slope stability index by times for each cell in the monitoring region. An occurrence time estimation unit 1112 estimates the time a landslide is likely to occur in the monitoring region based on distribution of slope stability indices for cells in the monitoring region. The distribution of slope stability indices may be a ratio of the number of cells for which the slope stability index exceeds a predetermined threshold to the number of cells that make up the monitoring region, and may also be average values of slope stability indices for a plurality of cells that make up the monitoring region.SELECTED DRAWING: Figure 3
【課題】降雨により土砂崩落が発生する可能性が高い時刻を推定するシステムを提供する。【解決手段】圧力水頭算出部１１１０は、降雨時に危険評価セルに流れ込む水を供給する領域である監視領域内のセルの各々に関し、時刻毎における圧力水頭を算出する。安定性指標算出部１１１１は、監視領域内のセルの各々に関し、時刻ごとにおける斜面安定性指標を算出する。発生時刻推定部１１１２は、監視領域内の各々のセルにおける斜面安定性指標の分布に基づき、監視領域における土砂崩落の発生時刻を推定する。斜面安定性指標の分布は、監視領域を構成するセルの数に対する、斜面安定性指標が所定の閾値を上回るセルの数の比率であってもよいし、監視領域を構成する複数のセルの斜面安定性指標の平均値であってもよい。【選択図】図３
SYSTEM FOR ESTIMATING TIME LANDSLIDE OCCURS
To provide a system for estimating the time a landslide is highly likely to occur due to rain.SOLUTION: A pressure head calculation unit 1110 calculates a pressure head by times for each cell in a monitoring region that is for supplying water flowing into evaluated dangerous cells when it rains. A stability index calculation unit 1111 calculates a slope stability index by times for each cell in the monitoring region. An occurrence time estimation unit 1112 estimates the time a landslide is likely to occur in the monitoring region based on distribution of slope stability indices for cells in the monitoring region. The distribution of slope stability indices may be a ratio of the number of cells for which the slope stability index exceeds a predetermined threshold to the number of cells that make up the monitoring region, and may also be average values of slope stability indices for a plurality of cells that make up the monitoring region.SELECTED DRAWING: Figure 3
【課題】降雨により土砂崩落が発生する可能性が高い時刻を推定するシステムを提供する。【解決手段】圧力水頭算出部１１１０は、降雨時に危険評価セルに流れ込む水を供給する領域である監視領域内のセルの各々に関し、時刻毎における圧力水頭を算出する。安定性指標算出部１１１１は、監視領域内のセルの各々に関し、時刻ごとにおける斜面安定性指標を算出する。発生時刻推定部１１１２は、監視領域内の各々のセルにおける斜面安定性指標の分布に基づき、監視領域における土砂崩落の発生時刻を推定する。斜面安定性指標の分布は、監視領域を構成するセルの数に対する、斜面安定性指標が所定の閾値を上回るセルの数の比率であってもよいし、監視領域を構成する複数のセルの斜面安定性指標の平均値であってもよい。【選択図】図３
SYSTEM FOR ESTIMATING TIME LANDSLIDE OCCURS
土砂崩落の発生時刻を推定するシステム
MATSUSHI YUKI (author) / KIKUTA MASAHITO (author) / UCHIDA KIYOTAKA (author)
2020-04-16
Patent
Electronic Resource
Japanese
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