UDEC modelling on wave propagation across fractured rock masses

X. B. Zhao, J. Zhao, J. G. Cai, A. M. Hefny

Research output: Contribution to journalArticlepeer-review

143 Citations (Scopus)


Wave attenuation across fractured rock masses is a great concern of rock engineers to assess the safety of underground structures in and on rocks under dynamic loads. Due to the discreteness of rock masses, the universal distinct element code (UDEC) has been adopted for the study of rock mass problems. In this paper, the calibration work of UDEC modelling on P-wave propagation across single linearly and nonlinearly deformable fractures is conducted. Subsequently, numerical studies of P-wave propagation across multiple nonlinearly deformable fractures are carried out. The magnitude of transmission coefficient is calculated as a function of nondimensional fracture spacing for different numbers of fractures. The results reveals that under some circumstances, the magnitude of transmission coefficient not only increases with increasing number of fractures, but also is larger than 1.

Original languageEnglish
Pages (from-to)97-104
Number of pages8
JournalComputers and Geotechnics
Issue number1
Publication statusPublished - Jan 2008
Externally publishedYes


  • Discrete element modelling
  • Fractures
  • Rock masses
  • Wave propagation

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Computer Science Applications


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