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Chinese Journal of High Pressure Physics  > 2012  >  26(2): 205-210.
XIE Hua-Gang, RUAN Huai-Ning, WU Ling-Li. Slitting Mechanism and Numerical Simulation Experiments of Complex Ligamented Charge Holders[J]. Chinese Journal of High Pressure Physics, 2012, 26(2): 205-210. doi: 10.11858/gywlxb.2012.02.013
Citation: XIE Hua-Gang, RUAN Huai-Ning, WU Ling-Li. Slitting Mechanism and Numerical Simulation Experiments of Complex Ligamented Charge Holders[J]. Chinese Journal of High Pressure Physics, 2012, 26(2): 205-210. doi: 10.11858/gywlxb.2012.02.013
shu

Slitting Mechanism and Numerical Simulation Experiments of Complex Ligamented Charge Holders

doi: 10.11858/gywlxb.2012.02.013
  • 1.

    Geotechnical Engineering Research Institute, Hohai University, Nanjing 210098, China;

  • 2.

    Department of Civil Engineering and Architecture, Tongling university, Tongling 244000, China;

  • 3.

    Tongling TianYang Industrial Park Investment Co., Ltd, Tongling 244000, China

  • Received Date: 18 Nov 2010
  • Rev Recd Date: 17 Aug 2011
  • Issue Publish Date: 15 Apr 2012
    Abstract
  • According to the theries of explosion mechanics and rock fracture dynamics mechanics, we found that the slits location shear stress of the complex ligamented charge holders is about 1.59 times of that of the conventional ligamented charge holders. The finite element software ANSYS10.0/LS-DYNA was employed to numerically compare the blasting effects of three kinds of seam cartridge, and it was found that the blasting effect of the complex ligamented charge holders is the best. Through comparing the effective plastic strain in the slits direction and vertical slits direction of the complex ligamented charge holders, we obtained that the effective plastic strain is the slits direction is 2.93 times of that in the vertical slits direction. After companing the pressure of surrounding rock in the far zone, we observed that the blasting pressure in the far zone of the complex ligamented charge holders is the lowest, which may lead to the minimum degree of injury to the surrounding rock and full use of the energy.

     

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