MATHEMATICAL MODELING OF THE ANGLE EFFECT OF THE APPLICATION SHOCK LOAD WHILE DRILLING ROCK ON THE EFFICIENCY OF CHIPPING FORMATION
Journal Title: Вестник научного центра по безопасности работ в угольной промышленности - Year 2019, Vol 0, Issue 2
Abstract
The article substantiates the possibility of improving the efficiency of short-hole drilling by determining the most effective angle of application of the shock load during impact-rotation drilling. Investigated the stress-strain state of the rock mass in the under-cut zone when simulating drilling. A mathematical model of the formation of large rock chips at a different angle of shock load on the wedge has been developed. The influence of the angle of application of the directional shock load of the wedge, imitating the working part of the drilling tool, on the chipped volume is investigated by the method of finite element analysis. The influence of the angle effect of the application shock load in the range from 30 to 50 degrees on the volumes of a single chip, the highest values of which increase to 1.5 times, is established.
Authors and Affiliations
N. I Sysoev, D. A. Grinko, A. A. Grinko
Keywords
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- EP ID EP645126
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