潛在大規模崩塌分級方法學初步研擬

The Study of Potential Large-Scale Landslide Grading Method

10.6653/MoCICHE.202310_50(5).0007

陳德偉；吳庭瑜；魏倫瑋；楊哲銘；曾佳漢；黃春銘；簡留玄；謝有忠；林錫宏

大規模崩塌分級 ； 崩塌地形潛勢分級表 ； 層級分析法 ； 光達數值地形模型 ； Large-scale landslide scoring ； Landslide Topographic Feature Susceptibility Table ； Analytic Hierarchy Process ； LiDAR DEM

土木水利

50卷5期（2023 / 10 / 01）

40 - 48

繁體中文;英文

近年來由於氣候變遷及降雨集中，造成大規模崩塌災害不斷，尤其是2009年莫拉克颱風導致的小林村大規模崩塌，造成巨大生命財產損失。為了解大規模崩塌之分布，經濟部地質調查及礦業管理中心在全臺灣已判釋出2,500處潛在大規模崩塌。本研究蒐集國外大規模崩塌分級方法，研擬出適合於臺灣之方法，並定名為「崩塌地形特徵潛勢分級表」。本文以南投縣境內336處潛在大規模崩塌進行實作填表後，共得A、B、C、D級分別為1、29、132及174處。評分較高者集中於力行產業道路，且現場勘查亦發現顯著現生崩塌現象，說明本研究擬定之分級表適用性良好，可以對潛在大規模崩塌正確評分，亦可合理呈現潛在大規模崩塌之潛勢等級。

In recent years, climate change and severe rainfall have cause large-scale landslides and disasters. In particular, the landslides occurred in Siaolin Village during typhoon Morakot in 2009 caused huge losses of lives and properties. In order to realize the distribution of large-scale landslide, the Central Geological Survey, MOEA had interpreted 2,500 potential large-scale landslides in Taiwan. This study collected large-scale landslide grading related references, and integrated into a large-scale landslide grading method which was suitable for Taiwan, naming it as the Landslide Topographic Feature Susceptibility Table. After grading 336 potential large-scale landslides in Nantou County, there were 1, 29, 132 and 174 sites of grades A, B, C, and D respectively. The sites with higher scores were concentrated on the Li-shing Mountain Road, which showed that the scoring table proposed in this study were applicable and could correctly classify the grade of potential large-scale landslides.

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