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Comparative Numerical Analysis of Elastic Modulus according to Distribution and Content of Breccia in Fault Core
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  • Journal title : The Journal of Engineering Geology
  • Volume 25, Issue 3,  2015, pp.387-393
  • Publisher : The Korea Society of Engineering Gelolgy
  • DOI : 10.9720/kseg.2015.3.387
 Title & Authors
Comparative Numerical Analysis of Elastic Modulus according to Distribution and Content of Breccia in Fault Core
Yun, Hyun-Seok; Song, Gyu-Jin; Moon, Seong-Woo; Kim, Chang-Yong; Seo, Yong-Seok;
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 Abstract
Fault breccia, produced by fracturing and comminution of host rock during fault activity, is a common component within fault cores. Fault breccia may display a preferred orientationin accordance with the sense of motion on the fault. Here we use a numerical analysis technique to study the effects of the distribution and content of breccia in fault core on the elastic moduli. The analytical models are grouped into those in which breccias display a preferred orientation within fault core and those in which breccias are randomly oriented. The breccia compositions considered here are granite and shale, and the breccia contents are 10 wt%, 20 wt%, and 30 wt%. Our results show that for all the cases considered, differences in the deformation moduli fall within the range 0.1%~1.1% and differences in the elastic moduli fall within the range 0.02~0.4 MPa. Thus, the distribution and content of fault breccia have almost no effect on the elastic moduli.
 Keywords
fault breccia;fault core;distribution of breccia;content of breccia;elastic modulus;
 Language
Korean
 Cited by
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