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

Wu, W. and Zhu, J. B. and Zhao, J. (2013) A further study on seismic response of a set of parallel rock fractures filled with viscoelastic materials. Geophysical Journal International, 192 (2). pp. 671-675. ISSN 0956-540X. https://resolver.caltech.edu/CaltechAUTHORS:20130221-140606417

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Abstract

The purpose of this study is to further investigate the seismic response of a set of parallel rock fractures filled with viscoelastic materials, following the work 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.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1093/gji/ggs055 DOIUNSPECIFIED
http://gji.oxfordjournals.org/content/192/2/671PublisherUNSPECIFIED
Additional Information:© 2012 The Authors. Published by Oxford University Press on behalf of The Royal Astronomical Society. Accepted 2012 November 2. Received 2012 October 3; in original form 2012 August 10. First published online: December 6, 2012. This work is sponsored by the Swiss National Science Foundation (200021_124846).
Funders:
Funding AgencyGrant Number
Swiss National Science Foundation (SNSF)200021_124846
Subject Keywords:Body waves; Seismic attenuation; Wave propagation; Fractures and faults
Issue or Number:2
Record Number:CaltechAUTHORS:20130221-140606417
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20130221-140606417
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:37058
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:22 Feb 2013 23:45
Last Modified:03 Oct 2019 04:44

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