Authors: I.A. Zhukov

Title of the article: Mechanics of destruction of rock by impact at simultaneous intrusion of several indentor

Year: 2018, Issue: 1, Pages: 93-98

Branch of knowledge: Transport, mine and construction engineering

Index UDK: 622.2833

DOI: 10.26730/1999-4125-2018-1-93-98

Abstract: The urgency of the study. Justification of the efficiency of rock destruction by various drilling tools is connected with the need to increase productivity of drilling operations and to reduce power consumption in the process of destruction. The purpose of the work is searching and justification of rational geometrical parameters of the indenters and schemes of their placement on the drilling tool ensuring rock destruction by impact actions including for receiving blast-holes of non-round section. The research methods are based on carrying out the physical experiment on rock of high hardness with a various number of indenters introduced at the same time. The results of researches have shown the possibility of assessment of the mechanism of hard rock destruc-tion on the basis of the analysis of dependence "force – introduction"; they prove optimality of application of the scheme of the equilateral triangle for reinforcing the drilling tool with hard-alloy inserts confirming the possibility of drilling by impact actions of blast-holes with non-round cross section.

Key words: impact destruction drilling blast-hole rock

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