Evaluation of engineering solutions on integrated development of Elna magnesite deposit

Authors: Kantemirov V.D.

Integrated mineral mining is a priority area of advance in the mining art. The article considers mining scenarios for extraction of two and more types of minerals within the same open pit in terms of Elna magnesite deposit adjacent to Berdyaush granite massif. The engineering solutions are proposed for concurrent manufacture of marketable products from different minerals within the same quarry, namely, for extraction of magnesite for the production of refractory materials simultaneously with the production of granite blocks and cuboid crushed stone from granite rocks. The production volumes by types of mineral raw materials are determined, and the types of process equipment for the implementation of the production program are proposed. Technological problems arising in the joint extraction of magnesite and granite, and the related solutions toward improved efficiency of integrated mineral mining are considered. The regular patterns and specific features of drilling and blasting operations in joint quarrying of two mineral types are determined. The dependences of the permissible mass of a single explosive charge on the distance between the blasting block and the guarded rock mass are established. These dependences allow adjustment of blasting operations in the quarry with regard to protection of the solid granite massif from the impact of seismic blast wave and from induced fracturing.

Keywords: magnesite, granite, granite blocks, cuboid crushed stone, production volumes, quarry, integrated mining, drilling and blasting operations, efficiency.
For citation:

Kantemirov V. D. Evaluation of engineering solutions on integrated development of Elna magnesite deposit. MIAB. Mining Inf. Anal. Bull. 2021;(5—1):29—40. [In Russ]. DOI: 10.25018/0236_1493_2021_51_0_29.

Acknowledgements:

The article is based on the R&D project implemented within the framework of the Basic Research Program of the Governmental Academies of Sciences, Topic 1: Methods to Take into Account Transient Processes in Mining Deep-Seated Mineral Deposits of Complex Structure, No. 0405-2019-0005.

Issue number: 5
Year: 2021
Page number: 29-40
ISBN: 0236-1493
UDK: 622.271.32:553.682
DOI: 10.25018/0236_1493_2021_51_0_29
Article receipt date: 15.12.2020
Date of review receipt: 24.02.2021
Date of the editorial board′s decision on the article′s publishing: 10.04.2021
About authors:

Kantemirov V. D., Cand. Sci. (Eng.), Quality management sector chief, Institute of Mining of Ural branch of RAS, Ekaterinburg, Russia, ukrkant@mail.ru.

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