Myeong-Hyeok Ihm. "CLASSIFICATION OF FACTORS OF GEOLOGICAL RISK FOR INTERMEDIATE DEPTH TUNNELING IN SOUTH KOREA." SGEM International Multidisciplinary Scientific GeoConference- EXPO Proceedings; 22nd SGEM International Multidisciplinary Scientific GeoConference Proceedings 2022, Science and Technologies in Geology, Exploration And Mining, 2022, pp. 115-120. https://doi.org/10.5593/sgem2022/1.1/s02.014