IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2015  > Vol12 No.5
Geometrical and Geotechnical Characteristics of Landslides in Korea under Various Geological Conditions
Kyeong-Su KIM; Young-Suk SONG
Corresponding AuthorYoung-Suk SONG
2015-09
Source PublicationJournal of Mountain Science
ISSN1672-6316
Volume12Issue:5Pages:1267-1280
Subtype期刊论文
AbstractThe goal of this study is to determine the geometrical and geotechnical characteristics of landslides under various geological conditions using detailed field surveys, laboratory soil tests and precipitation records. Three study areas are selected to consider different rocks, including gneiss in Jangheung, granite in Sangju and sedimentary rocks in Pohang, South Korea. Many landslides have occurred in these three areas during the rainy season. Precipitation records indicate that landslides occurring in the gneiss area of Jangheung and granite area of Sangju may be influenced by the hourly rainfall intensity rather than cumulative rainfall. However, landslides occurring in the sedimentary rock area of Pohang may be influenced by hourly rainfall intensity and cumulative rainfall. To investigate the factors that influence these types of landslides, a detailed landslide survey was performed and a series of laboratory soil tests were conducted. According to the detailed field survey, most landslides occurred on the flanks of mountain slopes, and the slope inclination where they occurred mostly ranged from 26 to 30 degrees, regardless of the geological conditions. The landslide in the gneiss area of Jangheung is larger than the landslides in the granite area of Sangju and sedimentary rock area of Pohang. Particularly, the landslide in the sedimentary rock area is shorter and shallower than the landslides in the gneiss and granite areas. Thus, the shape and size of the landslide are clearly related to the geological conditions.According to the integrated soil property and landslide occurrence analyses results, the average dry unit weight of the soils from the landslide sites is smaller than that of the soils obtained from the non-landslide site. The average coefficient of permeability of soils obtained from the landslide sites is greater than that of soils obtained from the non-landslide sites with the same geology. These results indicate that the soils from the landslide sites are more poorly graded or looser than the soils from the non-landslide sites.
KeywordLandslides Geological Condition Geometrical Characteristics Precipitation Soil Properties South Korea
DOI10.1007/s11629-014-3108-z
Indexed BySCI
Language英语
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/10894
CollectionJournal of Mountain Science_Journal of Mountain Science-2015_Vol12 No.5
Recommended Citation
GB/T 7714
Kyeong-Su KIM,Young-Suk SONG. Geometrical and Geotechnical Characteristics of Landslides in Korea under Various Geological Conditions[J]. Journal of Mountain Science,2015,12(5):1267-1280.
APA Kyeong-Su KIM,&Young-Suk SONG.(2015).Geometrical and Geotechnical Characteristics of Landslides in Korea under Various Geological Conditions.Journal of Mountain Science,12(5),1267-1280.
MLA Kyeong-Su KIM,et al."Geometrical and Geotechnical Characteristics of Landslides in Korea under Various Geological Conditions".Journal of Mountain Science 12.5(2015):1267-1280.
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