물리탐사 기반의 땅밀림 지역 위험성평가 사례연구 = A Case Study on Hazard Assessment of Ground Creep Areas Based on Geophysical Exploration

다국어 초록 (Multilingual Abstract)

This study quantitatively analyzed the characteristics of areas affected by land creep through geophysical survey. To assess the scale of the land creep, the site was divided into upper, middle, and lower sections, and investigations were conducted on geological, soil, topographical, hydrological, and forest characteristics. Soil samples were collected and tested in the laboratory to determine soil properties such as moisture content, internal friction angle, and permeability coefficient. In addition, seismic and electrical resistivity surveys were conducted to analyze subsurface characteristics. Using these data, slope stability analyses were performed to evaluate the risk of ground failure during both dry and rainy seasons, thereby assessing the likelihood of collapse due to soil creep. The study site was a slope in Wongil-ri, Bongpyeong-myeon, Pyeongchang-gun, Gangwon-do, where soil creep is actively occurring. Although the land creep is not easily identifiable by visual inspection, the creeping area was found to be uplifted weathered bedrock at the lower slope, and it was determined to be at risk of collapse during the rainy season. Through multiple geophysical investigations, this study identified the characteristics of creeping slopes and suggests that these findings can inform effective risk management strategies for such areas.