E3S Web Conf.
Volume 123, 2019Ukrainian School of Mining Engineering - 2019
|Number of page(s)||9|
|Published online||22 October 2019|
Physical modeling of the rock bolt interaction with the rock massif
Institute of Geotechnical Mechanics named after M.S. Polyakov of the National Academy of Sciences of Ukraine, Department of Rock Mechanics, 2a Simferopolska St., 49005 Dnipro, Ukraine
* Corresponding author: email@example.com
The results of the physical modeling of the “rock bolt – rock massif” system are presented. The characteristics of rock bolt free oscillations depending on the degree of its clamping and tension were studied on special test benches. Oscillations were caused by a single hit to the rock bolt end. It has been established, that the relaxation time of rock bolt free oscillations is the most informative parameter for non-destructive testing. Experimental dependences, that connect the informative parameter with the characteristics of the rock bolt fastening quality, have been determined. An optimal scheme for registering the oscillations in the “rock bolt – rock massif” system is proposed. The basic data has been obtained to substantiate the method of non-destructive testing the quality of rock bolt fastening.
© The Authors, published by EDP Sciences, 2019
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