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Volume 37 Issue 8
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TANG Zhi, PAN Yi-shan, WANG Kai-xing. Dynamic analysis of support for surrounding rock of rockburst roadway[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(8): 1532-1538. DOI: 10.11779/CJGE201508025
Citation: TANG Zhi, PAN Yi-shan, WANG Kai-xing. Dynamic analysis of support for surrounding rock of rockburst roadway[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(8): 1532-1538. DOI: 10.11779/CJGE201508025
shu

Dynamic analysis of support for surrounding rock of rockburst roadway

  • 1. Technology &Equipment of Coal Mine Safety, Liaoning Technical University, Fuxin 123000, China;
    2. School of Mechanics and Engineering, Liaoning Technical University, Fuxin 123000, China

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  • Received Date: November 10, 2014
  • Published Date: August 24, 2015
    Graphical Abstract
    • Abstract
  • A dynamic model for the support for surrounding rock of rockburst roadway is established. The overlying rock layer is simplified as the block composed of multiple mass blocks, the rock mass simplified as the rigid body, the connection between rocks simplified as the Kelvin-Voigt model, the supporting system simplified as the spring and energy dissipation damper, and the initial rock is subjected to impacting load. The supporting system is a conventional supporting system when the damping is 0. And it is an energy absorption supporting system when damping is greater than 0. The dynamic model is analyzed. The results show that the acceleration and displacement amplitude of the surrounding rock of the roadway under impact loading can be greatly reduced by enhancing support and improving supporting strength. Adding damping component in the supporting system is conducive to quelling the vibration of the surrounding rocks quickly, enhancing the anti-impact capacity of supports and improving the stability of the surrounding rocks. The high strength energy absorption support is put forward to prevent and control the rockburst roadway .
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    • References (16)
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