DOI: 10.18503/1995-2732-2024-22-1-5-12
Abstract
Relevance of the study. The volume of using friction stabilizers shows a clear upward trend. Their current share is 31% of the total volume of roof bolts. At the same time, expanding the scope of application and increasing efficiency is ensured by increasing load-bearing capacity of the friction stabilizer Fb. The increase is achieved by using higher quality steels or changing the anchor design. The first option is associated with increased manufacturing costs. In this regard, a priority is given to the second option. Objective. The developed design of the reinforced friction stabilizer includes in the head part an insert made of a material, showing less elastic modulus as compared with the stabilizer rod. To calculate load-bearing capacity, an analytical model should be created to factor into the features of the changes made. Originality. Force interaction corresponding to the design of the reinforced friction stabilizer is presented in a loading diagram, where the effect of the reinforcing insert on bending moment in the anchor rod is presented as a distributed load, whose value is determined through its elastic modulus. The adopted loading diagram factors into the features of joint elastic deformation of the wall of the anchor rod and the insert. Result. The resulting analytical model allows us to study the influence of every design parameter on load-bearing capacity of the rod fixed in a borehole, Fb. Practical Relevance. The proposed analytical model used to calculate load-bearing capacity of friction stabilizers of a new design provides us with a rationale for assigning its parameters when developing passports for supporting mine openings.
Keywords
combined anchor support, friction stabilizer, load-bearing capacity, loading diagram, analytical model
For citation
Neugomonov S.S., Zubkov A.A., Samigulin V.A., Kutlubaev I.M. Study on Force Interaction between a Reinforced Friction Stabilizer and a Borehole. Vestnik Magnitogorskogo Gosudarstvennogo Tekhnicheskogo Universiteta im. G.I. Nosova [Vestnik of Nosov Magnitogorsk State Technical University]. 2024, vol. 22, no. 1, pp. 5-12. https://doi.org/10.18503/1995-2732-2024-22-1-5-12
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