EQUIPMENT AND MATERIALS | |

ArticleName | Load-bearing capacity of tubular friction bolt |

DOI | 10.17580/gzh.2019.05.14 |

ArticleAuthor | Zubkov A. A., Kalmykov V. N., Kutlubaev I. M., Mukhamedyarova M. S. |

ArticleAuthorData | UralEnergoResurs, Magnitogorsk, Russia:
Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia:
The authors appreciate participation of Candidate of Engineering Sciences, Specialist |

Abstract | The functionality of the friction-type anchor support is determined by the load-bearing capacity of the rod and the support unit interacting with the support plate. The bearing capacity of a tubular frictional bolt is determined by the nature of its interaction with the walls of the hole. The preliminary (estimated) calculation of this index is difficult because of the lack of information about the deformation condition of the rod. The proposed interaction scheme assumes coupling only over a part of the cross-sectional profile. The force factors are represented by the concentrated and distributed loads. Based on these assumptions, the mathematical model reflects the force interaction of the rod and hole. The parameters characterizing the accepted interaction scheme are determined from the solution of the obtained nonlinear equations. The physical simulation of the bolt installation in the mock-hole is performed. The accepted rod–hole interaction scheme is experimentally confirmed. The numerical simulation results agree with the experimental data. The proposed model of the tubular friction bolt operation allows calculating the bolt load-bearing capacity depending on the parameters of the rod and hole. |

keywords | Load-bearing capacity, tubular friction bolt, loading scheme, equilibrium equations, mockup hole, experiment, installation force, rod puller |

References | 1. Dolsak W., Glantschnegg D. Development of a rock bolt automation attachment for the installation of improved self-drilling friction bolts. 22. Kömürlü E., Kesimal A., Çolak Ü. Effect of polyurea type thin spray-on liners on rock bolt performances. Madencilik. 2015. Vol. 53. No. 3-4. pp. 13–18.23. Charette F, Bennett A. The importance of the face plate as part of an engineered holistic ground support scheme in dynamic conditions. Proceedings of the 8. Perth, 2017. pp. 709–722.^{th} International Conference on Deep and High Stress Mining24. Feodosiev V. I. Strength of materials. 16 ^{th} revised edition Moscow : Izdatelstvo MGTU Baumana, 2016. 543 p. |

Language of full-text | russian |

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