Abstract
Natural rock contains many complicated defects in different scales, resulting in reduction of strength and various special mechanical characteristics, e.g. discontinuous, anisotropic behavior etc. In order to investigate the strength and deformation properties of rock samples containing pre-existing single fissure, a series of three-dimensional (3D) numerical simulations of uniaxial compression and triaxial compression tests on the sandstone specimens were carried out with the Distinct Element Method (DEM), in which a new 3D bond contact model incorporating rolling and twisting resistances was implemented to reproduce the mechanical characteristics of sandstone during the tests. The influence of flaw inclination and confining pressure were investigated from macroscopic and microscopic perspectives. The numerical results demonstrate that the mechanical characteristics of the fissured sandstone samples are in good agreement with experimental results. The confining pressure has a remarkable effect on peak strength and deformation properties of pre-fissured sandstone samples. With confining pressure increasing, the peak strength and the deformation modulus increase. The pre-existing fissure reduces the strength compared to intact rock samples and the reduction extent of peak strength decreases with increasing fissure angle. The present research is helpful to improve the understanding of fracture mechanism of engineering rock and rock structures.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Goodman, R.E.: Introduction to Rock Mechanics. Wiley, New York (1989)
Wong, R.H.C., Law, C.M., Chau, K.T., et al.: Crack propagation from 3-D surface fractures in PMMA and marble specimens under uniaxial compression. Int. J. Rock Mech. & Min. Sci. 41(3), 37–42 (2004)
Sahouryeh, E., Dyskin, A.V., Germanovich, L.N.: Crack growth under biaxial compression. Eng. Fract. Mech. 69(18), 2187–2198 (2002)
Baud, P., Wong, T.F., Zhu, W.: Effects of porosity and crack density on the compressive strength of rocks. Int. J. Rock Mech. Min. Sci. 67(4), 202–211 (2014)
Dyskin, A.V., Germanovich, L.N., Ustinov, K.B.: A 3-D model of wing crack growth and interaction. Eng. Fract. Mech. 63(1), 81–110 (1999)
Lee, H., Jeon, S.: An experimental and numerical study of fracture coalescence in pre-cracked specimens under uniaxial compression. Int. J. Solids Struct. 48(6), 979–999 (2011)
Yang, S.Q., Jing, H.W.: Strength failure and crack coalescence behavior of brittle sandstone samples containing a single fissure under uniaxial compression. Int. J. Fract. 168(2), 227–250 (2011)
Yang, S.Q., Jiang, Y.Z., Xu, W.Y., et al.: Experimental investigation on strength and failure behavior of pre-cracked marble under conventional triaxial compression. Int. J. Solids Struct. 45(17), 4796–4819 (2008)
Wang, S.Y., Sloan, S.W., Sheng, D.C., et al.: Numerical study of failure behavior of pre-cracked rock specimens under conventional triaxial compression. Int. J. Solids Struct. 51(5), 1132–1148 (2014)
Duan, K., Kwok, C.Y., Tham, L.G.: Micromechanical analysis of the failure process of brittle rock. Int. J. Numer. Anal. Meth. Geomech. 39(6), 618–634 (2015)
Jiang, M.J., Chen, H., Crosta, G.B.: Numerical modeling of rock mechanical behavior and fracture propagation by a new bond contact model. Int. J. Rock Mech. Min. Sci. 78, 175–189 (2015)
Jiang, M.J., Shen, Z.F., Wang, J.: A novel three-dimensional contact model for granulates incorporating rolling and twisting resistances. Comput. Geotech. 65, 147–163 (2015)
Li, L., Jiang, M.J., Zhang, F.G.: Quantitative simulation of the triaxial test considering residual strength on the deep rock using DEM and parameters analysis. Rock Soil Mech. (accepted for publication). (in Chinese)
Shen, Z.F., Jiang, M.J., Wan, R.: Numerical study of interparticle bond failure by 3D discrete element method. Int. J. Numer. Anal. Meth. Geomech. 40(4), 523–545 (2016)
Rutter, E.H., Glover, C.T.: The deformation of porous sandstones: are Byerlee friction and the critical state line equivalent? J. Struct. Geol. 44, 129–140 (2012)
Bera, B., Mitra, S.K., Vick, D.: Understanding the micro structure of Berea Sandstone by the simultaneous use of micro-computed tomography (micro-CT) and focused ion beam-scanning electron microscopy (FIB-SEM). Micron 42(5), 412–418 (2011)
Jiang, M.J., Konrad, J.M., Leroueil, S.: An efficient technique for generating homogeneous specimens for DEM studies. Comput. Geotech. 30(7), 579–597 (2003)
Yang, S.Q., Huang, Y.H.: An experimental study on deformation and failure mechanical behavior of granite containing a single fissure under different confining pressures. Environ. Earth Sci. 76(10), 364 (2017)
Acknowledgement
The research was funded by the Major Project of Chinese National Programs for Fundamental Research and Development (973 Program) (No. 2014CB046901), which support is greatly appreciated.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2018 Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Zhu, W., Jiang, M., Li, L., Li, T. (2018). A Numerical Study on Mechanical Behavior of Pre-fissured Sandstone Under Triaxial Compression by Three-Dimensional Distinct Element Method. In: Zhang, L., Goncalves da Silva, B., Zhao, C. (eds) Proceedings of GeoShanghai 2018 International Conference: Rock Mechanics and Rock Engineering. GSIC 2018. Springer, Singapore. https://doi.org/10.1007/978-981-13-0113-1_3
Download citation
DOI: https://doi.org/10.1007/978-981-13-0113-1_3
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-13-0112-4
Online ISBN: 978-981-13-0113-1
eBook Packages: Earth and Environmental ScienceEarth and Environmental Science (R0)