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Analysis and numerical simulation of dynamic effect on rock under high pressure water jet

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Journal of Coal Science and Engineering (China)

Abstract

Based on continuum mechanics and rock dynamics, analyzed the micro-structure damage of rock and the impulsive effect under high pressure water jet and developed the dynamic model. Further, on the assumption of that rock was homogeneous and isotropic, a computational model was established based on nonlinear finite element and Arbitrary Lagrangian-Eulerian(ALE) method. The dynamic effect impacted on rock under high pressure water jet was simulated by the dynamic contact method. The propagation of stress wave in rock was numerically simulated at different impacting velocity. The results show that the propagation velocity of stress wave is proportional to the impacting velocity of high pressure water jet. The faster the impacting velocity is, the quicker the comedown of stress wave.

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Authors and Affiliations

  1. Key Lab. for the Exploration of Southwestern Resource & Environmental Disaster Control Engineering, Ministry of Education, Chongqing University, Chongqing, 400030, China

    Xiao-hong Li  (李晓红) & Hu Si  (司 鹄)

  2. Department of Safety Engineering, Chongqing University, Chongqing, 400030, China

    Hu Si  (司 鹄) & Dan-dan Wang  (王丹丹)

Authors
  1. Xiao-hong Li  (李晓红)
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  2. Hu Si  (司 鹄)
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  3. Dan-dan Wang  (王丹丹)
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Corresponding author

Correspondence to Hu Si  (司 鹄).

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Supported by the National Natural Science Foundation of China(5062140)

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Li, Xh., Si, H. & Wang, Dd. Analysis and numerical simulation of dynamic effect on rock under high pressure water jet. J Coal Sci Eng China 14, 209–212 (2008). https://doi.org/10.1007/s12404-008-0043-z

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  • DOI: https://doi.org/10.1007/s12404-008-0043-z

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