A further study on seismic response of a set of parallel rock fractures filled with viscoelastic materials

W. Wu, Jianbo Zhu, J. Zhao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

36 Citations (Scopus)

Abstract

The purpose of this study is to further investigate the seismic response of a set of parallel rock fractures filledwith viscoelastic materials, following thework by Zhu et al. Dry quartz sands are used to represent the viscoelastic materials. The split Hopkinson rock bar (SHRB) technique is modified to simulate 1-D P-wave propagation across the sand-filled parallel fractures. At first, the displacement and stress discontinuity model (DSDM) describes the seismic response of a sand-filled single fracture. The modified recursive method (MRM) then predicts the seismic response of the sand-filled parallel fractures. The SHRB tests verify the theoretical predictions by DSDM for the sand-filled single fracture and by MRM for the sand-filled parallel fractures. The filling sands cause stress discontinuity across the fractures and promote displacement discontinuity. The wave transmission coefficient for the sand-filled parallel fractures depends on wave superposition between the fractures, which is similar to the effect of fracture spacing on the wave transmission coefficient for the non-filled parallel fractures.Published by Oxford University Press on behalf of The Royal Astronomical Society.
Original languageEnglish
Pages (from-to)671-675
Number of pages5
JournalGeophysical Journal International
Volume192
Issue number2
DOIs
Publication statusPublished - 3 May 2013
Externally publishedYes

Keywords

  • Body waves
  • Fractures and faults.
  • Seismic attenuation
  • Wave propagation

ASJC Scopus subject areas

  • Geophysics
  • Geochemistry and Petrology

Cite this