On using DEM for simulating response of jointed rock to underground explosion

Yuyong Jiao, Jian Zhao

Research output: Contribution to journalArticleResearchpeer-review

4 Citations (Scopus)

Abstract

To verify the capability of discrete element method (DEM) in modeling the dynamic response of rock masses to blasting loads, two underground explosion tests are numerically investigated. Results show that rock joints can significantly affect the transmission and the attenuation of shock waves, and can therefore influence the stability of the adjacent underground structures. Rock joints act as a kind of filters through which only low-frequency components of the shock waves are allowed to pass, and the high-frequency components of the shock waves do no harm to far-field tunnels if a predominant joint set exists in between. The spacing of joint set can also remarkably affect the propagation process. It indicates that as a discontinuum-based numerical approach, DEM is good at simulating the propagation and attenuation of blasting wave in jointed rock masses, and in modeling the stability of underground structures subjected to blasting loads.

Original languageEnglish
Pages (from-to)4936-4940
Number of pages5
JournalChinese Journal of Rock Mechanics and Engineering
Volume23
Issue numberSUPPL. 2
Publication statusPublished - 1 Jul 2004
Externally publishedYes

Keywords

  • DEM
  • Frequency
  • Numerical simulation
  • Shock wave

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