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Strength and Deformation Characteristics of Jointed Block Rock Matrix Using Triaxial System

  • Manish ShahEmail author
  • Arpit Patel
Conference paper
  • 41 Downloads
Part of the Lecture Notes in Civil Engineering book series (LNCE, volume 56)

Abstract

The strength and deformation behavior of jointed rock was examined in the context of the design of slopes, construction of tunneling, and mining projects due to the presence of natural hair cracks, fissures, bedding planes, faults, etc. Dolomite rock from Gujarat is used for experimental study to find the shear parameters of proposed rock mass matrix. A different rock matrix is formed with providing the vertical and horizontal cuts in different patterns. A different matrix includes the following vertical cuts, two vertical cuts (perpendicular to each other) passing from center of specimen, three vertical cuts (each at every 60°) passing through center of specimen, and four vertical cuts in grid pattern. With above vertical cuts also all specimens were cut in horizontal plane at every (I) 1/6 of height, (II) 1/3 of height, and (III) 1/2 of height. A different matrix is tested using rock triaxial system. The strength behavior was studied using Hoek–Brown strength theory and Mohr–Coulomb strength theory. Results were compared with intact rock and various jointed rock matrix specimens. Orientation of rock matrix shows little increase in cohesion value and decrease in angle of internal friction with increase in number of joints in vertical direction. The typical failure/deformation pattern was observed in jointed rock matrix specimens such as axial failure, block rotation, splitting of blocks through joints, and shear failure.

Keywords

Dolomite Rock matrix Shear parameters Failure criteria Triaxial system 

Notes

Acknowledgements

The authors are thankful to Dr. G. P. Vadodaria, Principal, L. D. College of Engineering, Ahmedabad and Prof. A. R. Gandhi, Head of Department, L. D. College of Engineering for providing all necessary facilities for this research project.

References

  1. 1.
    Arzua J et al (2014) Strength and dilation of jointed granite specimens in triaxial test. Int J Rock Mech Sci Direct.  https://doi.org/10.1016/j.ijrmms-2014-04-001CrossRefGoogle Scholar
  2. 2.
    Barton N (1973) Review of a new shear-strength criterion for rock joints. Eng Geol.  https://doi.org/10.1016/0013-7952(73)90013-6CrossRefGoogle Scholar
  3. 3.
    Cai M et al (2003) Estimation of rock mass deformation modulus and strength of jointed hard rock masses. Int J Rock Mech Mining Sci Sci Direct.  https://doi.org/10.1016/s1365-1609(03)00025-xCrossRefGoogle Scholar
  4. 4.
    Evert H et al (2002) Hoek-Brown failure criterion. In: NARMS-TAC Conference. Toronto.  https://doi.org/10.1007/s00603-012-0276-4CrossRefGoogle Scholar
  5. 5.
    Hoek E, Carranza-Torres CT, Corkum B (2002) Hoek-Brown Failure Criterion— 2002 Edition. In: Proceedings of the 5th North American rock mechanics symposium, Toronto, pp 267–273, 7-10 July 2002Google Scholar
  6. 6.
    Huang D et al (2015) A comprehensive study on the smooth joint model in DEM simulation of jointed rock masses. Granular Matter.  https://doi.org/10.1007/s10035-015-0594-9CrossRefGoogle Scholar
  7. 7.
    Kahraman S, Alber M (2008) Triaxial strength of a fault breccia of weak rocks in a strong matrix. Bull Eng Geol Environ.  https://doi.org/10.1007/s40098-016-0212-8CrossRefGoogle Scholar
  8. 8.
    Liu M et al (2017) Strength criteria for intact rock. Indian Geotech J.  https://doi.org/10.1007/s40098-016-0212-8CrossRefGoogle Scholar
  9. 9.
    Rao KS et al (2016) Rock failure pattern under uniaxial, triaxial compression and brazilian loading conditions. In: Indian geotechnical conference. Chennai, IndiaGoogle Scholar
  10. 10.
    Shah MV et al (2017) Strength characteristics of jointed rock matrixes with circular opening under triaxial compression. In: Proceedings of 51st U.S. rock mechanics and geomechanics symposium. California, USAGoogle Scholar
  11. 11.
    Vergara et al (2015) Large scale tests on jointed and bedded rocks under multi-stage triaxial compression and direct shear. Rock Mecha Rock Eng  https://doi.org/10.1007/s00603-013-0541-1CrossRefGoogle Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  1. 1.Applied Mechanics DepartmentL. D. College of EngineeringGujaratIndia

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