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http://dx.doi.org/10.7843/kgs.2017.33.7.43

DEM Simulation on the Initiation and Development of Road Subsidence  

Kim, Yeonho (Dept. of Civil & Environmental Eng., Dankook Univ.)
Park, Seong-Wan (Dept. of Civil & Environmental Eng., Dankook Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.33, no.7, 2017 , pp. 43-53 More about this Journal
Abstract
Road subsidence, frequently occurring in urban areas, is caused by collapsing of surface layer due to underground cavities followed by a loss of soils. To better understand this phenomenon, the mechanism of cavity formation should be identified firstly. Two kinds of possible subsidence mechanisms were established through previous case studies and the numerical analyses based on Distinct Element Method were conducted for each of these mechanisms. It was confirmed that particle loss and surface settlement can develop differently depending on slit size, void ratio, and particle shape among the various factors influencing the road subsidence. The result demonstrated that the effects of varying cavity diameter and depth could be quantified as a damage chart.
Keywords
Road subsidence; Cavity; Discrete Element Method;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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