the establishment of the field of application of mining combines to ensure the
rational efficiency of the use of layered milling technology;
substantiation of the effectiveness of the transition to the non-blasting technology
of open source technology, which reduces the harmful effects on the environment.
The use of technology of layer-by-layer milling of rocks by surface miners
requires substantiation of the main criterion for determining the expediency of rational
use of mining combines, taking into account the costs of mining.
In this regard, an important and most promising direction in the existing mining-
geological and mining-technical conditions of mining enterprises is the possibility of a
real increase in the technical and economic indicators of enterprises through the
transition to a non-blasting technology for the development of iron ore deposits,
including the search for new and innovative solutions.
After analyzing literary sources and scientific work in this direction, we can
conclude that the issue of improving and applying the non-blasting technology of layer-
by-layer milling of half-rocky rocks and rocky rocks has not been fully explored,
because there are different approaches to this issue and, accordingly, with different
results. Based on the above, it is necessary to continue the study to obtain an effective
non-blasting technology for the development of rock and semi-rock rocks by milling
combines. Including the study of factors affecting the rational use of this excavating
and loading equipment in terms of their work in the traditional technology of surface
mining of minerals, taking into account modern advances in the field of mining.
The improved technological scheme allows to improve the technical and
economic performance of excavation and loading equipment and means of transport
by improving the organization of their work in the development of rock mass. Thus,
for iron ore pits, the use of an improved technological scheme makes it possible to
effectively develop half-rocky rocks and rocky rocks using milling-type mining
combines.
Regarding the technological aspect of the implementation of the technology of
layer-by-layer milling of rocks, it should be noted that this technological scheme allows
combines to effectively adapt to the existing technology. The harvester develops the
rock mass with the parameters of the elements of the development system already
formed by the existing technology and during the operation the harvester partially
adjusts the parameters of the elements of the development system for its rational work.
Research results. To increase the efficiency of opencast mining technology in
the conditions of operation of Krivbass’s iron ore pits through the use of an improved
technology of layer-by-layer milling of a ledge to its full height without drilling and
blasting operations. In order to realize in the future a priority technological scheme for
the operation of open pit miners in the development of the rock mass in the existing
technology for mining iron ore deposits.
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