Authors: V. Martyanov, V. Kolesnikov, M. Lapaev

Title of the article: Investigation of drilling and blasting works parameters for the combined technology of open pit mining of inclined deposits

Year: 2022, Issue: 3, Pages: 53-78

Branch of knowledge: 05.05.06 Mining machines

Index UDK: 622.271.3

DOI: 10.26730/2618-7434-2022-3-53-78

Abstract: At present, when developing inclined deposits, the transport technology is usually used, which determines parameters and organization of drilling and blasting operations on benches. When solving the problem of using combined technology on inclined deposits, the issues of preparation of rocks by explosion acquire a number of specific features, first of all, characteristic for mining operations within the middle and lower zones. It is known that all technological solutions are based, as a rule, on using a certain type of mining transport equipment. When developing the rocks of the middle zone, the above-mentioned peculiarities consist in the fact that in order to drill the middle zone mined by direct dumping technology, it is necessary to have high-performance machines capable of drilling wells to a depth of 50-70 m and more. Implementation of the considered combined development of inclined deposits in the part concerning direct dumping technology of the middle zone is based on application of the technology of blasting with rock dumping into the mined-out space. And this, in its turn, predetermines the requirements to the choice of parameters of drilling and blasting operations and, first of all, to the choice of borehole direction and specific consumption of explosives. This article deals with the issues of explosive displacement of rock and the formation of blasted rock mass in the conditions of combined development of inclined deposits.

Key words: drilling and blasting open pit mining internal dump coal-bearing zone blasted rock

Receiving date: 18.08.2022

Approval date: 29.09.2022

Publication date: 08.12.2022

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