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Rock Mechanics and Rock Engineering

, Volume 52, Issue 10, pp 3959–3970 | Cite as

Experimental Study on the Performance of Rock Bolts in Coal Burst-Prone Mines

  • Yongzheng Wu
  • Fuqiang GaoEmail author
  • Jinyu Chen
  • Jie He
Original Paper

Abstract

As coal mining progresses to greater depths, the rate and severity of coal burst hazards have greatly increased, resulting in significant operational and safety challenges. Appropriate rock support design for coal burst-prone roadways requires the understanding of the mechanical characteristics of the support system under impact loads and the underlying damage mechanisms. In this study, the response of rock bolts under coal burst conditions is assessed, aiming to advance the knowledge concerning the application of rock bolt systems in coal burst-prone mines. This is achieved by a review of typical failure patterns of rock bolts caused by coal bursts in a typical coal burst coalfield in China, a field study on the response of rock bolts subjected to a simulated coal burst via blasting and a laboratory study on the mechanical properties of rock bolts that have suffered coal bursts. It is believed that the outcome of this study has added to the improved understanding of the performance and design of rock bolt support systems in coal burst-prone mines.

Keywords

Coal bursts Rock bolt Blasting test Shear localization 

Notes

Acknowledgements

This work has been supported by the National Natural Science Foundation of China (Grant no. 51774185). The authors would like to thank their colleagues for their assistance during the field test.

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Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2019

Authors and Affiliations

  • Yongzheng Wu
    • 1
    • 2
  • Fuqiang Gao
    • 1
    • 2
    Email author
  • Jinyu Chen
    • 1
    • 2
  • Jie He
    • 1
    • 2
  1. 1.Mining and Designing BranchChina Coal Research InstituteBeijingChina
  2. 2.State Key Laboratory of Coal Mining and Clean Utilization (China Coal Research Institute)BeijingChina

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