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논문 기본 정보

자료유형
학술저널
저자정보
Kong, Suk-Min (Department of Civil Engineering, Seoul National University of Science and Technology) Kim, Dong-Min (Geotechnical Engineering Research Division, Korea Institute of Civil Engineering and Building Technology) Lee, Dae-Young (Geotechnical Engineering Research Division, Korea Institute of Civil Engineering and Building Technology) Jung, Hyuk-Sang (Department of Railroad Construction and Safety Engineering, Dongyang University) Lee, Yong-Joo (Department of Civil Engineering, Seoul National University of Science and Technology)
저널정보
테크노프레스 Geomechanics & engineering Geomechanics & engineering 제16권 제3호
발행연도
2018.1
수록면
285 - 293 (9page)

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In densely populated urban areas with a large amount of infrastructure, ground subsidence events can result in massive casualties and economic losses. In South Korea, the incidence of ground subsidence in urban areas has increased in recent years and the number of underground cavities suspected of causing such events has significantly increased. Therefore, it is essential to develop techniques to prevent the occurrence of underground and ground subsidence. In this study, a field test, laboratory test, and numerical analysis were conducted to determine the optimal compaction degree of the upper support layer of any underground cavity below the level of sewer pipes in order to prevent such cavities from collapsing and leading to ground subsidence accidents. During the field test, an underground cavity was simulated using ice, and the generation of the cavity was confirmed using ground penetrating radar. The ground investigation was performed using a cone penetration test, and the compaction of the ground where ground subsidence occurred was evaluated with a laboratory test. The behaviour of the ground under various conditions was predicted using a numerical analysis based on the data obtained from the field test and previous studies. Based on these results, the optimal compaction degree of the ground required to prevent the underground cavity from causing ground subsidence was predicted and presented.

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