Sokolov I.V., Smirnov A.A., Antipin Yu.G., Rozhkov A.A. Physical modelling of blasting in high-grade quartz mining

Abstract

Problem Statement (Relevance): The blasting technology applied for granular quartz at the Kyshtym underground mine produces a significant yield of -20 mm rock (up to 20%), which cannot be processed thus constituting waste. Optimization of the blasting technology and study of the blasting parameters appear to present an important task considering the limited resources and the uniqueness of the deposit. Objectives: The objective of the current stage of the research is to identify the fragmentation pattern resulting from blasting a group of interacting column charges as related to the burden-to-spacing ratio. Methods Applied: Physical modeling was applied while securing dynamic, kinematic and geometric similarity. Findings: Quality results were obtained that show how the model is fractured when blasted with interacting column charges at different arrangements. It was found that when detonated at the same time interacting column charges act as flat charge and that there occurs almost no overgrinding in the nearest blast zone. Practical Relevance: The above modelling results are taken into account when designing the drilling and blasting technology for the test field of the Kyshtym underground mine.

Keywords

Quartz deposit, blasting and drilling, granulated explosives, overgrinding, physical modeling, flat charge.

Igor V. Sokolov – D.Sc. (Eng.)

Head of Underground Mining Laboratory of the Institute of Mining, UB RAS, Yekaterinburg, Russia. Phone: +7(343)350-71-28. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.. ORCID: http://orcid.org/0000-0001-7841-5319

Alexey A. Smirnov – Ph.D. (Eng.)

Senior Research Fellow at the Underground Mining Laboratory of the Institute of Mining, UB RAS, Yekaterinburg, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.. ORCID: http://orcid.org/0000-0002-8949-1525

Yuri G. Antipin – Ph.D. (Eng.)

Artem A. Rozhkov – Postgraduate Student

Junior Research Fellow at the Underground Mining Laboratory of the Institute of Mining, UB RAS, Yekaterinburg, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.. ORCID: http://orcid.org/0000-0003-3007-1099

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