Design method for perimeter control blasting in jointed rock mass at open pit mines

Authors: Tyupin V.N.

The literature analysis shows that designs of perimeter control blasting neglect some parameters which govern efficiency of the process. The aim of this study is to develop a method of perimeter control blasting in jointed rock mass in open pit mining in different geological and geotechnical conditions. New relations are developed to determine the spacing ap between the perimeter control blastholes and the safe weight p of explosive per 1 m of blasthole, including detonation characteristics of explosives, diameter of blastholes, physical and mechanical properties of rocks under rock pressure and rock mass jointing parameters. The calculation of ap and p is carried out as subjects of physical and mechanical parameters of rocks, blasthole diameter and rock mass jointing parameters. The calculated values of ap and p conform with the actual data obtained in perimeter control blasting in open pit mines and in Sukhoi Dok Massif of granite–gneiss. The further research is to be aimed at development of the perimeter control blasting design formulas with the rock hardness factor instead of the physical and mechanical properties of rocks.

Keywords: perimeter control blasting, spacing of blastholes, safe explosive weight per 1 m, jointed rock mass, physical and mechanical properties of rocks, detonation characteristics of explosives.
For citation:

Tyupin V. N. Design method for perimeter control blasting in jointed rock mass at open pit mines. MIAB. Mining Inf. Anal. Bull. 2024;(9):78-87. [In Russ]. DOI: 10.25018/ 0236_1493_2024_9_0_78.

Acknowledgements:

The study was supported by the Ministry of Science and Higher Education of the Russian Federation, State Contract No. FZWG-2023-0011.

Issue number: 9
Year: 2024
Page number: 78-87
ISBN: 0236-1493
UDK: 622.271:622.235
DOI: 10.25018/0236_1493_2024_9_0_78
Article receipt date: 26.09.2023
Date of review receipt: 04.04.2024
Date of the editorial board′s decision on the article′s publishing: 10.08.2024
About authors:

V.N. Tyupin, Dr. Sci. (Eng.), Professor, Belgorod State National Research University, 308015, Belgorod, Russia, e-mail: tyupinvn@mail.ru, ORCID ID: 0000-0002-3709-0957.

 

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