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김영석(Youngseok Kim),홍승서(Sungseo Hong),채종길(Jonggil Chae),이보형(Bohyeong Lee),문흥만(Hungman Moon),최형철(Hyungchul Choi) 대한설비공학회 2012 대한설비공학회 학술발표대회논문집 Vol.2012 No.11
In this study, the local ground freezing equipments and systems was developed for freezing sampling of saturated soil and its performance was evaluated at the pilot-scale. As a result of test under the freezing pipe filled with liquid nitrogen, the frozen soil column of 60cm diameter was made after about 20 hours and the average freezing velocity was approximately 12mm/h.