Hostname: page-component-78c5997874-t5tsf Total loading time: 0 Render date: 2024-11-10T09:49:37.421Z Has data issue: false hasContentIssue false
  • English
  • Français

Influences of Microscopic Factors on Macroscopic Strength and Stiffness of Inter-Layered Rocks — Revealed by a Bonded Particle Model

Published online by Cambridge University Press:  05 May 2011

F.-S. Jeng ,
T.-T. Wang ,
H. H. Li  and
T.-H. Huang
F.-S. Jeng*
Affiliation:
Department of Civil Engineering, National Taiwan University, Taipei, Taiwan 10617, R.O.C.
T.-T. Wang*
Affiliation:
Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei, Taiwan 10608, R.O.C.
H. H. Li*
Affiliation:
Department of Civil Engineering, National Taiwan University, Taipei, Taiwan 10617, R.O.C.
T.-H. Huang*
Affiliation:
Department of Civil Engineering, National Taiwan University, Taipei, Taiwan 10617, R.O.C.
*
* Professor
** Asistant Professor
*** Ph.D.
* Professor
Get access

Abstract

Since a conventional petrographic analysis does not allow a systematic and detailed study on how the microscopic factors affect the macroscopic behavior of inter-layered rocks, this research adopted a numerical model, the bonded particle model, to explore the micro-mechanisms associated with the strength and stiffness of inter-layered rocks. The model was first calibrated by comparing the simulations to the actual behavior until they tally with each other. Following, the microscopic factors, including the bond strength, the bond stiffness, type of bonds and friction of particles and type of bond stiffness, are varied to study their influences. As expected, the bond strength and the bond stiffness are found to have a direct and significant influence on the macroscopic uniaxial compressive strength and stiffness, respectively. Furthermore, close observations on the breaking of bonds during the loading process reveal interesting phenomena, including the transition of shear/normal bond breaking, the type of internal fracture and the factors controlling internal failure, etc. These phenomena enlighten the interpretations about the micromechanisms accounting for the macroscopic strength and stiffness of inter-layered rocks.

Keywords

Inter-layered rockBonded particle modelStrengthStiffnessMicroscopic mechanismNumerical analysis
Type
Articles
Information
Journal of Mechanics , Volume 24 , Issue 4 , December 2008 , pp. 379 - 389
Copyright
Copyright © The Society of Theoretical and Applied Mechanics, R.O.C. 2008

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1.Jeng, F. S., Weng, M. C, Lin, M. L. and Huang, T. H., “Influence of Petrographic Parameters on Geotechnical Properties of Tertiary Sandstones from Taiwan,” Engineering Geology, 73, pp. 71–91 (2004).CrossRefGoogle Scholar
2.Lin, M. L., Jeng, F. S., Tsai, L. S. and Huang, T. H., “Wetting Weakening of Tertiary Sandstones — Microscopic Mechanism,” Environmental Geology, 48, pp. 265–275 (2005).CrossRefGoogle Scholar
3.Weng, M.C., Jeng, F. S., Huang, T. H. and Lin, M. L., “Characterizing the Deformation Behavior of Tertiary Sandstones,” International Journal of Rock Mechanics and Mining Sciences, 42, pp. 388–401 (2005).CrossRefGoogle Scholar
4.Amadei, B., Rock Anisotropy and the Theory of Stress Measurements, Springer, Heidelberg (1983).CrossRefGoogle Scholar
5.Goodman, R. E., Introduction to Rock Mechanics, Wiley, New York (1989).Google Scholar
6.Lepper, H. A., “Compression Tests on Oriented Specimens of Yule Marble,” American Journal of Science, 247, pp. 570–575(1949).CrossRefGoogle Scholar
7.Attewell, B. and Sandford, M. R., “Intrinsic Shear Strength of a Brittle, Anisotropic Rock, I. Experimental and Mechanical Interpretation, II. Textural Data Acquisition and Processing, III. Textural Interpretation of Failure,” International Journal of Rock Mechanics and Mining Sciences, 11, pp. 423–430, pp. 431–438, pp. 439–451 (1974).CrossRefGoogle Scholar
8.Niandou, H., Shao, J. F., Henry, J. P. and Fourmaintraux, D., “Laboratory Investigation of the Mechanical Behavior of Tournemire Shale,” International Journal of Rock Mechanics Mining Sciences, 34, pp. 3–16 (1997).CrossRefGoogle Scholar
9.Donath, F. A., “A Strength Variation and Deformational Behavior of Anisotropic Rocks,” State of Stress in the Earth's Crust, Elsevier, New York (1964).Google Scholar
10.McLamore, R. and Gray, K. E., “The Mechanical Behavior of Anisotropic Sedimentary Rocks,” Journal of Engineering for Industry, Trans, of ASME, 89, pp. 62–73 (1967).Google Scholar
11.Tien, Y. M. and Tsao, P. F., “Preparation and Mechanical Properties of Artificial Transversely Isotropic Rock,” International Journal of Rock Mechanics and Mining Sciences, 37, pp. 1001–1012 (2000).CrossRefGoogle Scholar
12.Tien, Y. M., Kuo, M. C. and Juang, C. H., “An Experimental Investigation of the Failure Mechanism of Simulated Transversely Isotropic Rocks,” International Journal of Rock Mechanics and Mining Science, 43, pp. 1163–1181 (2006).CrossRefGoogle Scholar
13.Lin, H. D. and Chen, W. C., “Anisotropic Strength Characteristics of Composite Soil Specimen Under Cubical Triaxial Conditions,” Journal of Mechanics, 23, pp. 41–50 (2007).CrossRefGoogle Scholar
14.Jaeger, J. C., “Shear Failure of Anisotropic Rocks,” Geology Magazine, 97, pp. 65–72 (1960).CrossRefGoogle Scholar
15.Salamon, M. D. G., “Elastic Moduli of a Stratified Rock Mass,” International Journal of Rock Mechanics of Mining Sciences, 5, pp. 519–527 (1968).CrossRefGoogle Scholar
16.Hoek, E. and Brown, E. T., Underground Excavation in Rock, Institution of Mining and Metallurgy, London (1981).Google Scholar
17.Taliercio, A. and Landriani, G. S., “A Failure Condition for Layered Rock,” International Journal of Rock Mechanics and Mining Sciences, 25, pp. 299–305 (1988).CrossRefGoogle Scholar
18.Ramamurthy, T., “Strength and Modulus Responses of Anisotropic Rocks,” Comprehensive Rock Engineering, 1, Fundamental, Pergamon, Oxford, pp. 313–329 (1993).Google Scholar
19.Tien, Y. M. and Kuo, M. C., “A Failure Criterion for Transversely Isotropic Rocks,” International Journal of Rock Mechanics and Mining Sciences, 38, pp. 399–412 (2001).CrossRefGoogle Scholar
20.Chiang, Y. C., “Mechanics of Matrix Cracking in Bonded Composites,” Journal of Mechanics, 23, pp. 95–105 (2007).CrossRefGoogle Scholar
21.Potyondy, D. O. and Cundall, P. A., “A Bonded-Particle Model for Rock,” International Journal of Rock Mechanics and Mining Sciences, 41, pp. 1329–1364 (2004).CrossRefGoogle Scholar
22.PFC2D (Particle Flow Code in 2 Dimension) Version 3.1, Itasca Cons Group, Minneapolis (2004).Google Scholar
23.Hsieh, Y. M., Li, H. H., Huang, T. H. and Jeng, F. S., “Interpretations on How the Macroscopic Mechanical Behavior of Sandstone Affected by Microscopic Properties - Revealed by Bonded-Particle Model,” Engineering Geology, 99, pp. 1–10 (2008).CrossRefGoogle Scholar
24.Iverson, S. R., “Investigation of Bulk Solids Engineering Properties and Application of PFC2D to Ore Pass Flow Problems,” Numerical Modeling in Micromechanics via Particle Methods, Balkema, Rotterdam, Netherlands, Proc. of the 1st International PFC Symposium, Gelsenkirchen, Germany, pp. 252–258 (2003).Google Scholar
25. ISRM, Rock Characterization, Testing and Monitoring — ISRM Suggested Methods, Brown, E.T. Ed., Pergamon, Oxford (1981).Google Scholar