Applied Landslide Area-Ratio in Slope Unit for Landslide Potential Prediction Models-1

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Project title

Code/計畫編號

MOST109-2625-M002-016

Translated Name/計畫中文名

霧社水庫集水區大規模崩塌物聯網多元多尺度遙測調查監測及災害潛勢模型建立-應用斜坡單元之崩壞比於崩塌潛感分析對崩塌量面積與體積之推測(子計畫五)(I)-1

Project Coordinator/計畫主持人

Yu-Jia Chiu

Funding Organization/主管機關

National Science and Technology Council

Co-Investigator(s)/共同執行人

李鴻源

Department/Unit

Hydrotech Research Institute, National Taiwan University

Website

https://www.grb.gov.tw/search/planDetail?id=13527643

Year

2020

Start date/計畫起

01-08-2020

Expected Completion/計畫迄

31-07-2021

Bugetid/研究經費

947千元

ResearchField/研究領域

防災工程

近年隨著崩塌地判釋與追蹤、氣象監測、地文調查等資料變多，透過統計回歸計算發展了網格法或單元法崩塌潛勢研究與預判，有效的解決了崩塌地區位預測的問題，然而坡單元法無法更仔細的呈現坡單元內崩塌的量體與區位，而網格法也需要被界定如何將機率網格進一步解讀與圈畫為一處單一崩塌地，使其與面積、體積估算結合。若能更精確的解讀崩塌發生面積與體積，將更有可能解讀崩塌土砂的運移與影響範圍，對潛勢地區附近的坡地與河川等防治也有重要的參考價值。本研究預計探討現行常用的網格法或斜坡單元法進行崩塌潛勢分析之後，並另外使用坡單元內崩壞比率建立崩塌潛感模型，綜合探討如何能進一步的估算崩塌的體積規模，加強對坡地崩塌預測的了解與崩塌潛勢成果的運用潛力。 In recent years, with the increase of data on the landslide image, meteorological monitoring, and geological surveys, the research and prediction of the landslide potential with grid-unit method or slope-unit method have developed through statistical regression calculation, and they can predict landslide location well.However, slope unit method cannot present detail information on the volume and location in the single slope unit, and grid method also needs to explain how to group each cell as a single landslide, to fit area and volume which has been observed. If the landslide area and volume can be predicted more accurately, it will tell more about the movement and impact range of the landslide sediment, and it will also have important improve for the prevention and control of slopes and rivers near the potential area.This study expects to discuss the commonly used grid method or slope-unit method on the analysis of landslide susceptibility, and then use the collapse ratio in slope-units to establish a collapse potential model, and comprehensively explore how to further estimate the landslide volume scale and enhance the understanding of landslide prediction and application.

Keyword(s)

崩塌地
潛感
坡面單元
崩壞比
Landslide
Susceptibility
Slope Unit
Landslide Area-ratio

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Applied Landslide Area-Ratio in Slope Unit for Landslide Potential Prediction Models-1

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