UralEnergoResurs, Magnitogorsk, Russia:

A. A. Zubkov, Deputy Director, Candidate of Engineering Sciences

Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia:
V. N. Kalmykov, Professor, Doctor of Engineering Sciences, prmpi@magtu.ru
I. M. Kutlubaev, Professor, Doctor of Engineering Sciences
M. S. Mukhamedyarova, Post-Graduate Student

The authors appreciate participation of Candidate of Engineering Sciences, Specialist R. V. Kulsaitov, UralEnergoResurs, in the experimental part of the studies.

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.

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