Discussion of some fundamental issues of FLAC3D in research of dynamic response of rock slope

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Abstract

FLAC3D is an important numerical analysis software to study dynamic response of rock slope. In application of the program, the common issues such as absorbing boundary and the method to apply wave have been well studied. However, effects of model mesh size, damping and width of slope are still unknown. In order to make the result more convictive, this article has discussed the above issues systematically. It found that when the maximum mesh size is smaller than 1/10~1/8 of the smallest wavelength, the mesh size is smaller, the computational accuracy is higher. Meanwhile, values of damping and width of slope have no effect on the result. Additional, results of FLAC3D modeling on wave transmission across rock joints agree well with analytical solutions, so it has verified the capability and accuracy of FLAC3D on dynamic response of rock slope.

Original languageEnglish
Title of host publication13th ISRM International Congress of Rock Mechanics
Editors Hassani, Hadjigeorgiou, Archibald
PublisherInternational Society for Rock Mechanics
ISBN (Electronic)9781926872254
StatePublished - 2015
Event13th ISRM International Congress of Rock Mechanics 2015 - Montreal, Canada
Duration: 10 May 201513 May 2015

Publication series

Name13th ISRM International Congress of Rock Mechanics
Volume2015- MAY

Conference

Conference13th ISRM International Congress of Rock Mechanics 2015
Country/TerritoryCanada
CityMontreal
Period10/05/1513/05/15

Keywords

  • Damping value
  • Dynamic response of rock slope
  • FLAC3D
  • Mesh size
  • Width of slope

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