Case analysis on the characteristics of the landcreep area: focusing on Seo-myeon in Suncheon, South Korea

Abstract

This study was conducted to prevent landcreep damages by examining various features such as geology, topography, and physical characteristics. The first landcreep occurred in Seo-myeon in Suncheon, South Korea, in 2000. The second occurred in 2020, the damaged surface area of the second event was approximately 21.7 times that of the first, and it was discovered that landcreep in Sunchoen was contributed to forest road construction. The study area was a typical landcreep area caused by weathered rocks, and this area belonged to a type of convex terrain ground form. As a result of analyzing the landslide hazard grade, the landcreep is found to be different from general landslides because it includes most areas of landslide hazard grade 3–5 and out of the grade. Results show that the landcreep has proceeded in the directions of S15°E, S20°E, S25°E, and S30°E, which is consistent with the direction following the flow direction of groundwater determined using the electrical resistivity survey method.