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http://dx.doi.org/10.5762/KAIS.2019.20.5.27

Analysis on Displacement Characteristics of Slow-Moving Landslide on a slope near road Using the Topographic Map and Airborne LiDAR  

Seo, Jun-Pyo (Division of Forest Disaster Management, National Institute of Forest Science)
Kim, Ki-Dae (Division of Forest Disaster Management, National Institute of Forest Science)
Woo, Choong-Shik (Division of Forest Disaster Management, National Institute of Forest Science)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.20, no.5, 2019 , pp. 27-35 More about this Journal
Abstract
The purpose of this study is to analyze the displacement characteristics in slow-moving landslide area using digital elevation model and airborne LiDAR when unpredictable disaster such as slow-moving landslide occurred. We also aimed to provide basic data for establishing a rapid, reasonable and effective restoration plan. In this study, slow-moving landslide occurrence cracks were selected through the airborne LiDAR data, and the topographic changes and the scale of occurrence were quantitatively analyzed. As a result of the analysis, the study area showed horseshoe shape similar to the general form of slow-moving landslide occurrence in Korea, and the direction of movement was in the north direction. The total area of slow-moving landslide damage was estimated to about 2.5ha, length of landsldie scrap 327.3m, average width 19.3m, and average depth 8.6m. The slow-moving landslides did not occur on a large scale but occurred on the adjacent slope where roads were located, caused damage to retaining walls and roads. The field survey of slow-moving landslides was limited by accessibility and safety issues, but there was an advantage that accurate analysis was possible through the airborne LiDAR. However, because airborne LiDAR has costly disadvantages, it has proposed a technique to mount LiDAR on UAV for rapidity, long-term monitoring. In a slow-moving landslide damage area, information such as direction of movement of cracks and change of scale should be acquired continuously to be used in restoration planning and prevention of damage.
Keywords
Airborne LiDAR; Displacement; DEM; Slow-Moving Landslide; Topographic Map;
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Times Cited By KSCI : 5  (Citation Analysis)
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