A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
DEBRIS FLOW OCCURRENCE PREDICTION SYSTEM AND DEBRIS FLOW OCCURRENCE PREDICTION METHOD
PROBLEM TO BE SOLVED: To provide a debris flow occurrence prediction system and a debris flow occurrence prediction method that enable occurrence of debris flow to be predicted at an early stage only by installing a water level gauge.SOLUTION: When an operation start command signal Sa is input, a debris flow occurrence prediction section 24 reads out a measured water level at the point of time of the signal input and onwards from a water level memory 23, and detects a highest water level HWL based on the measured water level that has been read out. The debris flow occurrence prediction section also derives a water level descension ratio Revery three minutes based on the measured water level at the point of time tand onwards, when the highest water level was read out from the water level memory 23, and derives a judgment standard water level arrival time T, which is the time when a predicted water level PWLreaches a normal time water level NWL as the judgment standard water level if the water level descends at the water level descension ratio Rthat has been derived. Then, the debris flow occurrence prediction section outputs a warning issuance instruction signal Sb that instructs to issue a debris flow warning, when the obtained judgment standard water level arrival time T is within one hour from the point of time tof the highest water level.SELECTED DRAWING: Figure 1
【課題】水位計を設置するだけで土石流発生を早期に予測することができる土石流発生予測システムおよび土石流発生予測方法を提供する。【解決手段】土石流発生予測部２４は、動作開始指令信号Ｓａが入力されると、その時点以降の計測水位を水位メモリ２３から読み出して、読み出した計測水位に基づいて最高水位ＨＷＬを検出するとともに、水位メモリ２３から読み出した最高水位時点ｔ0以降の計測水位に基づいて３分間隔毎に水位下降率Ｒn求め、求めた水位下降率Ｒnで水位が下降したときの予測水位ＰＷＬnが判定基準水位の平常時水位ＮＷＬとなる時点である判定基準水位到達時点Ｔを求めたのち、求めた判定基準水位到達時点Ｔが最高水位時点ｔ0から１時間以内であると土石流警報を発するように指示する警報発生指示信号Ｓｂを出力する。【選択図】図１
DEBRIS FLOW OCCURRENCE PREDICTION SYSTEM AND DEBRIS FLOW OCCURRENCE PREDICTION METHOD
PROBLEM TO BE SOLVED: To provide a debris flow occurrence prediction system and a debris flow occurrence prediction method that enable occurrence of debris flow to be predicted at an early stage only by installing a water level gauge.SOLUTION: When an operation start command signal Sa is input, a debris flow occurrence prediction section 24 reads out a measured water level at the point of time of the signal input and onwards from a water level memory 23, and detects a highest water level HWL based on the measured water level that has been read out. The debris flow occurrence prediction section also derives a water level descension ratio Revery three minutes based on the measured water level at the point of time tand onwards, when the highest water level was read out from the water level memory 23, and derives a judgment standard water level arrival time T, which is the time when a predicted water level PWLreaches a normal time water level NWL as the judgment standard water level if the water level descends at the water level descension ratio Rthat has been derived. Then, the debris flow occurrence prediction section outputs a warning issuance instruction signal Sb that instructs to issue a debris flow warning, when the obtained judgment standard water level arrival time T is within one hour from the point of time tof the highest water level.SELECTED DRAWING: Figure 1
【課題】水位計を設置するだけで土石流発生を早期に予測することができる土石流発生予測システムおよび土石流発生予測方法を提供する。【解決手段】土石流発生予測部２４は、動作開始指令信号Ｓａが入力されると、その時点以降の計測水位を水位メモリ２３から読み出して、読み出した計測水位に基づいて最高水位ＨＷＬを検出するとともに、水位メモリ２３から読み出した最高水位時点ｔ0以降の計測水位に基づいて３分間隔毎に水位下降率Ｒn求め、求めた水位下降率Ｒnで水位が下降したときの予測水位ＰＷＬnが判定基準水位の平常時水位ＮＷＬとなる時点である判定基準水位到達時点Ｔを求めたのち、求めた判定基準水位到達時点Ｔが最高水位時点ｔ0から１時間以内であると土石流警報を発するように指示する警報発生指示信号Ｓｂを出力する。【選択図】図１
DEBRIS FLOW OCCURRENCE PREDICTION SYSTEM AND DEBRIS FLOW OCCURRENCE PREDICTION METHOD
土石流発生予測システムおよび土石流発生予測方法
YURI HIROKI (author) / SHIMIZU YUICHI (author) / IESHIMA DAISUKE (author)
2017-08-03
Patent
Electronic Resource
Japanese
Occurrence of Debris Flow and Its Prediction
| British Library Online Contents | 1994
Prediction of Occurrence and Runoff Analysis of Debris Flow
| British Library Conference Proceedings | 1993
DEBRIS FLOW PREDICTION SYSTEM AND DEBRIS FLOW PREDICTION METHOD
| European Patent Office | 2022
| European Patent Office | 2020
| European Patent Office | 2020