TY - GEN
T1 - Comparison of DEM and FDM for analysis of road embankment in karst region
AU - Kwak, C.
AU - Seo, K.
AU - Lee, J.
AU - Park, I.
PY - 2010
Y1 - 2010
N2 - Underground cavities are normally discovered in the North-Eastern part of South Korea, where the karst region spreads. This particular condition can create geotechnical hazard such as abrupt displacement, long-term settlement, cavity collapse, etc. In this research, a road embankment on the karst region is selected and analysed using Distinct Element Method (DEM) and Finite Different Method (FDM). In the DEM analysis, soil and rock mass are simulated using assemblies of circular balls. Porosity and particle-size distribution are also considered for evaluating the initial stress condition. In this study, it is focused on the estimate of elastic properties of specimen for FDM analysis based on case study using DEM analysis. A few numerical triaxial tests according to confining pressure have been performed and loading-unloading procedure is also simulated to determine Young's modulus and Poission's ratio. These properties are applied to FDM analysis of actual embankment section and compared with DEM analysis results.
AB - Underground cavities are normally discovered in the North-Eastern part of South Korea, where the karst region spreads. This particular condition can create geotechnical hazard such as abrupt displacement, long-term settlement, cavity collapse, etc. In this research, a road embankment on the karst region is selected and analysed using Distinct Element Method (DEM) and Finite Different Method (FDM). In the DEM analysis, soil and rock mass are simulated using assemblies of circular balls. Porosity and particle-size distribution are also considered for evaluating the initial stress condition. In this study, it is focused on the estimate of elastic properties of specimen for FDM analysis based on case study using DEM analysis. A few numerical triaxial tests according to confining pressure have been performed and loading-unloading procedure is also simulated to determine Young's modulus and Poission's ratio. These properties are applied to FDM analysis of actual embankment section and compared with DEM analysis results.
UR - http://www.scopus.com/inward/record.url?scp=84859926229&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84859926229&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84859926229
SN - 9780415804813
T3 - Rock Engineering in Difficult Ground Conditions - Soft Rocks and Karst - Proceedings of the Regional Symposium of the International Society for Rock Mechanics, EUROCK 2009
SP - 465
EP - 470
BT - Rock Engineering in Difficult Ground Conditions - Soft Rocks and Karst - Proceedings of the Regional Symposium of the International Society for Rock Mechanics, EUROCK 2009
T2 - Regional Symposium of the International Society for Rock Mechanics: Rock Engineering in Difficult Ground Conditions - Soft Rocks and Karst, EUROCK 2009
Y2 - 29 October 2009 through 31 October 2009
ER -