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International Conference on Discrete Element Methods

DEM 2016: Proceedings of the 7th International Conference on Discrete Element Methods pp 301–309Cite as

Combined Finite-Discrete Element Method Modeling of Rock Failure Problems

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Part of the book series: Springer Proceedings in Physics ((SPPHY,volume 188))

Abstract

The purpose of this paper is to propose a novel combined finite-discrete element method (FDEM), based on the cohesive zone model (CZM), for simulating rock failure problems. The rock mass is represented as a collection of elastic bulk elements glued by cohesive elements with zero thickness. To reproduce the tensile and shear micro-fractures in rock material, the Mohr-Coulomb model with tension cut-off is employed as the damage initiation criterion of cohesive elements. Moreover, the fluid-driven fracture can be modeled by pore pressure cohesive elements. Two numerical applications of the combined FDEM are studied in our work. First, a slope model with a planar joint is taken to study the slope failure mechanism. Second, the hydraulic fracture process of a wellbore model is simulated with the pore pressure cohesive zone model (PCZM). These studies indicate that the combined FDEM provide a useful way to simulate rock failure problems for research purposes.

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Authors and Affiliations

  1. State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, China

    Wei Zhou, Wei Yuan & Xiaolin Chang

Authors
  1. Wei Zhou
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  2. Wei Yuan
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  3. Xiaolin Chang
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Corresponding author

Correspondence to Wei Yuan .

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Editors and Affiliations

  1. Dalian University of Technology, Department of Engineering Mechanics Dalian University of Technology, Dalian, Liaoning, China

    Xikui Li

  2. Swansea University, College of Engineering Swansea University, Swansea, United Kingdom

    Yuntian Feng

  3. Colorado School of Mines, Department of Mechanical Engineering Colorado School of Mines, Golden, Colorado, USA

    Graham Mustoe

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Zhou, W., Yuan, W., Chang, X. (2017). Combined Finite-Discrete Element Method Modeling of Rock Failure Problems. In: Li, X., Feng, Y., Mustoe, G. (eds) Proceedings of the 7th International Conference on Discrete Element Methods. DEM 2016. Springer Proceedings in Physics, vol 188. Springer, Singapore. https://doi.org/10.1007/978-981-10-1926-5_33

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  • DOI: https://doi.org/10.1007/978-981-10-1926-5_33

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-10-1925-8

  • Online ISBN: 978-981-10-1926-5

  • eBook Packages: Physics and AstronomyPhysics and Astronomy (R0)

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