Some fundamental issues and verification of 3DEC in modeling wave propagation in jointed rock masses

X. F. Deng, Jianbo Zhu, S. G. Chen, J. Zhao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

38 Citations (Scopus)

Abstract

Discontinuities in rock masses greatly influence stress wave transmission. Before performing numerical modeling on complicated cases, benchmarking modeling must be performed first to validate the numerical code through comparison with theoretical solutions or experiment results. The accuracy of numerical results generally increases with decreasing mesh size. However, with an extremely fine mesh size, substantial computational time will be consumed. 3D plane wave propagation across a single joint or a joint set can be treated equivalently to a corresponding 2D case, as shown both analytically and numerically. However, it should be noted that when the incident wave is not a plane wave or there are unparallel joints and joint sets, a 3D case cannot be equivalent to a 2D case.
Original languageEnglish
Pages (from-to)943-951
Number of pages9
JournalRock Mechanics and Rock Engineering
Volume45
Issue number5
DOIs
Publication statusPublished - 1 Sep 2012
Externally publishedYes

Keywords

  • 3DEC
  • Joint orientation
  • Joint set
  • Mesh size
  • Rock joints
  • Rock mass
  • Wave propagation

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Geotechnical Engineering and Engineering Geology
  • Geology

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