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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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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.
fault breccia;fault core;distribution of breccia;content of breccia;elastic modulus;
 Cited by
ASTM D2487-06, 2006, Standard practice for classification of soils for engineering purposes, Annual Book of ASTM standard, 04.08.

Baek, Y., Yim, S. B., Seo, Y. S., Kwon, O. I., and Jeong, Y. J., 2006, Analysis of elastic behavior of conglomerate with sorting and dip using homogenization theory, Korea Society of Engineering Geology Conference, 297-305 (in Korean with English abstract).

Caine, J. S., Evans, J. P., and Forster, C. B., 1996, Fault zone architecture and permeability structure, Geology, 24(11), 1025-1028. crossref(new window)

Faulkner, D. R., Lewis, A. C., and Rutter, E. H., 2003, On the internal structure and mechanics of large strike-slip fault zones: field observations of the Carboneras fault in southeastern Spain, Tectonophysics, 367(3-4), 235-251. crossref(new window)

Gudmundsson, A., Simmenes, T. H., Belinda, L., and Philipp, S. L., 2010, Effects of internal structure and local stresses on fracture propagation, deflection, and arrest in fault zones, Journal of Structural Geology, 32(11), 1643-1655. crossref(new window)

Henderson, I. H. C., Ganerod, G. V., and Braathen, A., 2010, The relationship between particle characteristics and frictional strength in basal fault breccias: implications for fault-rock evolution and rockslide susceptibility, Tectonophysics, 486(1-4), 132-149. crossref(new window)

Heynekamp, M. R., Goodwin, L. B., Mozley, P. S., and Haneberg, W. C., 1999, Controls on fault-zone architecture in poorly lithified sediments, Rio Grande Rift, New Mexico: implications for fault-zone permeability and fluid flow, In: Haneberg, W. C., Mozley, P. S., Moore, J. C. and Goodwin, L. B. (Eds.), Faults and Subsurface Fluid Flow in the Shallow Crust, American Geophysical Union Geophysical Monograph, 113, 27-50.

Jeoung, T. J., 1996, The variation of poisson's ratio for the cretaceous sandstones and shale in the Euiseoung subbasin, The Journal of Engineering Geology, 6(2), 397-409 (in Korean with English abstract).

Jin, K. M., Kim, Y. S., Kang, H. C., and Shin, H. C., 2013, Study on developing characteristics of the Quaternary Gusan Fault in Uljin, Gyeongbuk, Korea, Journal of the Geological Society of Korea, 49(2), 197-207 (in Korean with English abstract).

Jung, H. C., Chun, Y. C., Park, C. M., Lee, H., and Oh, S. M., 2004, A case study on design of road tunnels in uncemented breccia, The Annual Conference of the Korean Society of Civil Engineers, 1533-1538 (in Korean).

Kim, T. K., Choi, S. S., and Jeong, Y. J., 2004, Geological, geotechnical characteristics and rock mass classification of the unconsolidated conglomerate in Gyeongju, Journal of Korean Geophysical Society, 7(4), 293-304 (in Korean with English abstract).

KS F 2314, 2013, Standard test method for unconfined compression test of soils, Korean Agency for Technology and Standards

Luis, I. G. V., Mercedes, F., Luis, O., and Carlos, O., 2004, Geological engineering, Pearson Education, Madrid, Spain, 119-153.

McCalpin, J. P., 1996, Paleoseismology, Academic Press, SanDiego, 588p.

Moon, S. W., Yun, H. S., Kim, W. S., Na, J. H., Kim, C. Y., and Seo, Y. S., 2014, Correlation analysis between weight ratio and shear strength of fault materials using multiple regression analysis, The Journal of Engineering Geology, 24(3), 397-409 (in Korean with English abstract). crossref(new window)

Seo, Y. S., Yim, S. B., Beak, Y., and Kim, J. S., 2006, Homogenization analysis for calculating elastic modulus of composite geo-materials, The Journal of Engineering Geology, 16(3), 227-233 (in Korean with English abstract).

Sibson, R. H., 1977, Fault rocks and fault mechanisms, Journal of the Geological Society, 133, 191-213. crossref(new window)

Yount, J. C., Shroba, R. R., McMasters, C. R., Huckins, H. E., and Rodriguez, E. A., 1987, Trench logs from a stand of the rock valley fault system, Nevada test site, Nye County, Nevada, United States Geological Survey Miscellaneous Field Studies Map, MF-1824, Scale 1:20, 37p.

Yun, H. S., Moon, S. W., and Seo, Y. S., 2015, Setting of the range for shear strength of fault cores in Gyeongju and Ulsan using regression analysis, Journal of Korean Tunnelling and Underground Space Association, 17(2), 361-372 (in Korean with English abstract). crossref(new window)