Analysis of the Characteristics of the Land Creeping (Slow-Moving) at Seomyeon, Suncheon-Si Area

This study was conducted to prevent land creeping by examining various features such as geology, topography, and physical characteristics, using the case of a land-crawled region. The first land creeping occurred in Seomyeon Suncheon-si in 2000, and 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 Sunchoen-si Landcreep occur because of forest road cut affected. After 1 h, it was moderate at a soil depth of 20, 100, 200, and 250 cm from the surface soil, according to a measurement result of soil dispersity. It was severe at soil depths of 100, 200, and 250 cm, and the clay soil between the bedrock was mild to severe, and it was determined to be severe in locations where groundwater was leaching. The objective study area was a typical land creeping-type landslide caused by weathered rocks, and this area belonged to a type of convex terrain ground (凸) form. The land creeping occurred in the convex area (凸). As a result of analyzing the landslide hazard grade, the creeping land area is found to be different from ordinary landslides because it includes most areas of landslide hazard grade 3–5 and out of the grade. Results show that the land creeping has proceeded in the directions of S15°E, S20°E, S25°E, and S30°E, which is consistent with the direction following the flow duration of groundwater determined using the electrical resistivity survey method.