Drilling and blasting design method to ensure preset fragmentation of rocks in open pit mining

Kutuzov, B. N.; Tyupin, V. N.

doi:10.17580/gzh.2017.08.12

Cited by 7 publications

(6 citation statements)

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“…This is attained by special blasting methods. This is why, the theoretical and practical research of rock breaking by borehole charges are continued, including physical and mathematical modeling (Ghiasi et al, 2016;Duan et al, 2015;Kutuzov & Tyupin, 2017;Moldovan et al, 2017;Ofoegbu & Smart, 2019;Silva et al, 2019;Vokhmin et al, 2015;Yan et al, 2015). The blasting for a buffer of earlier blasted rock mass or the blasting in an absolutely pressed medium (for monolithic massif) have become widespread practices in open-cut mining.…”

Section: Results and Discissionmentioning

confidence: 99%

Analyzing methods of determining pre-destruction of blast hole vicinity

Shevkun

Leshchinsky

Shishkin

et al. 2021

Nexo Revista Científica

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The level of deformation of the rock massif of a blasted slab must be planned in advance, depending on the required results of blasting. Thus the energy costs of barren rock overfilling as part of preparing for overburden excavation are inefficient. On the contrary, an increase in the blast energy spent on degrading and breaking the ore mass is an efficient measure of preparing for the excavation of mineral wealth. There are currently two methods used to determine the pre-destruction of a blasted rock massif. The first one is based on determining the number of strain waves passing through locations of borehole charges. However, this method fails to determine the preliminary rock destruction level. The second method is based on determining coefficients of the pre-destruction of a rock massif by these strain waves. The merit of this method is that it allows evaluating the quality pattern of the pre-destruction of a rock massif. The procedure of considering the fraction of energy of the strain waves, reflected by the shielding rock mass to the destructive amount of blasting charges and refracted to this destroyed rock, is proposed.

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Section: Results and Discissionmentioning

confidence: 99%

Analyzing methods of determining pre-destruction of blast hole vicinity

Shevkun

Leshchinsky

Shishkin

et al. 2021

Nexo Revista Científica

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show abstract

“…В связи с чем, Б.Н. Кутузов [3] по лученное значение r разл для горнотранспортного обору дования рекомендует принимать примерно в два раза меньшим, чем для людей.…”

Section: методы исследованийunclassified

Refined Formula for Determining the Radius Dangerous Zone for the Scattering of Individual Pieces of Rock Mass During the Explosion of Borehole Charges

Cherskikh,

Galimyanov,

Korneeva

et al. 2023

Ugol'

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“…The blasting pattern design to reach the preset fragmentation quality is determined using the studies [1,2]: the blasthole pattern is 1.6×1.6 m; the burden line is 1 m; the overdrill is 1.0 m; the explosive charge is 5.4-8.2 kg per blasthole; the powder factor is 0.…”

Section: Justification Of Drilling-and-blasting Pattern Design To Ens...mentioning

confidence: 99%