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Rational
parameters of drilling-and-blasting operations at mine workings
construction in the conditions of PJSC “Zaporizskyi
iron-ore plant”
M.M. Kononenko1*,
O.V. Nechyt1
1Dnipro University
of Technology, Dnipro, Ukraine
* Corresponding
author: e-mail: kmn211179@gmail.com
Physical and
technical problems of mining production, 2020, (22), 46-56.
https://doi.org/10.37101/ftpgp22.01.004
full
text (pdf)
ABSTRACT
Purpose. Substantiation
and choice of rational parameters of drilling-and-blasting operations for
mine workings construction with the use of emulsion explosives.
Methods. The tasks were solved by a complex method, which includes the
analysis of mining and geological conditions of deposition and development
of chambers by means of chamber systems of development with the laying of
the produced space, applied technology of drilling and blasting in the
course of mining and theoretical studies, which were performed using
mathematical methods.
Findings. As a result of the calculations, a new technological
solution was developed to substantiate and select rational parameters of
drilling and blasting operations with the use of emulsion explosives during
preparatory workings, which will allow to carry out resource saving in
carrying out tunneling works.
Originality. A new and
effective approach is used to determine the
location of holes in the bottom of the production, taking into account the
energy characteristics of the explosive and the physical and mechanical
properties of the rocks.
Practical
implications. A technological solution is developed to substantiate and select
rational parameters of drilling and blasting operations using emulsion
explosives for workings, which will allow to carry
out resource saving in the production of mining operations.
Keywords: emulsion
explosives, drilling and blasting passport, mining equipment,
self-propelled machinery, self-propelled drilling rig, loading and delivery
machine
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