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A Numerical Study on the Crack Development Behavior of Rock-Like Material Containing Two Intersecting Flaws

Author

Listed:
  • Bing Dai

    (School of Resources Environment and Safety Engineering, University of South China, Hengyang 421000, China)

  • Ying Chen

    (School of Resources Environment and Safety Engineering, University of South China, Hengyang 421000, China)

  • Guoyan Zhao

    (School of Resources and Safety Engineering, Central South University, Changsha 410000, China)

  • Weizhang Liang

    (School of Resources and Safety Engineering, Central South University, Changsha 410000, China)

  • Hao Wu

    (School of Resources and Safety Engineering, Central South University, Changsha 410000, China)

Abstract

It is quite often that rocks contain intersecting cracks. Therefore, crack behavior cannot be completely studied by only considering several isolated, single flaws. To investigate the crack behavior of rock or rock-like material containing intersecting flaws under uniaxial loading, numerical simulations were carried out using parallel bonded-particle models containing two intersecting flaws with different inclination angles (varying β) and different intersection angles (varying αα). The crack propagation processes are analyzed and two typical patterns of linkage are observed between two intersecting flaws: (1) One-tip-linkage that contains three subtypes: Coalescence position near the tip; coalescence position at the flaw, but far away from the tip; coalescence position outside the flaw at a certain distance from the tip; and (2) two-tip-linkage with two subtypes: Straight linkage and arc linkage. The geometries of flaws influence the coalescence type. Moreover, the effects of intersection angle α and inclination angle β on the peak stress, the stress of crack initiation, and the stress of crack coalescence are also investigated in detail.

Suggested Citation

  • Bing Dai & Ying Chen & Guoyan Zhao & Weizhang Liang & Hao Wu, 2019. "A Numerical Study on the Crack Development Behavior of Rock-Like Material Containing Two Intersecting Flaws," Mathematics, MDPI, vol. 7(12), pages 1-16, December.
    • Handle: RePEc:gam:jmathe:v:7:y:2019:i:12:p:1223-:d:296671
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    Citations

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    Cited by:

    1. Qinzheng Wu & Huanxin Liu & Bing Dai & Li Cheng & Danli Li & Penghui Qin, 2023. "Influence of Base-Angle Bolt Support Parameters and Different Sections on Overall Stability of a Roadway under a Deeply Buried High Stress Environment Based on Numerical Simulation," Sustainability, MDPI, vol. 15(3), pages 1-15, January.
    2. Ying Chen & Shirui Chen & Zhengyu Wu & Bing Dai & Longhua Xv & Guicai Wu, 2022. "Optimization of Genetic Algorithm through Use of Back Propagation Neural Network in Forecasting Smooth Wall Blasting Parameters," Mathematics, MDPI, vol. 10(8), pages 1-21, April.

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