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http://dx.doi.org/10.9720/kseg.2017.2.143

Experimental Study on Ground Subsidence and Underground Cavity Expansion under Various Conditions  

Jeong, SeongYun (Department of Civil and Environmental Engineering, KAIST)
Karoui, Tarek (Department of Civil and Environmental Engineering, KAIST)
Jeong, YeongHoon (Department of Civil and Environmental Engineering, KAIST)
Kim, DongSoo (Department of Civil and Environmental Engineering, KAIST)
Publication Information
The Journal of Engineering Geology / v.27, no.2, 2017 , pp. 143-152 More about this Journal
Abstract
Recently frequent occurrence of ground subsidence cases has become social issue, and people's concern on this problem has been growing accordingly. Meanwhile, understanding on the mechanism of ground subsidence formation is not enough. Therefore, this study aims for evaluating formation mechanism of ground subsidence under various groundwater conditions through model test when groundwater and soil are leaked together. Major factors found through model tests are direction of groundwater flow, head difference around the leakage point, and strehgth of the ground to support the underground cavity. Firstly, direction of groundwater flow has an influence on the direction of cavity expansion and ground collapse. Secondly, it is observed that the speed of ground subsidence formation increases as the head difference increases. Lastly, the expansion of the cavity can eventually lead to a sudden collapse.
Keywords
Ground subsidence; Model test; Cavity expansion; Groundwater flow; Soil erosion;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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