Improving the efficiency and safety of drilling and blasting operations at the elga coal deposit

The purpose of the study was to conduct a comparative analysis of the level of impact of technological explosions on industrial buildings and structures and to improve the quality of crushing rock mass, when using a non-electrical system and an electronic initiation system. The study of the seismic effect was carried out on the territory of mining and processing complex named “Elginsky”. The control of the explosions impact is carried out with the help of a software and hardware complex created on the basis of geophysical equipment. The complex recorded the parameters of seismic waves, then their interpretation and digital processing were carried out. Experimental results obtained during registering the seismic effect of technological explosions using an electronic and non-electrical initiation system are also presented. The calculated values and their comparison with the current tolerances are given. Conclusions about the quantitative dimensions of the impact on the studied objects are drawn. The technique of seismic measurements and subsequent processing of the data obtained is described. Analytical data of the seismic action of a mass explosion are presented. A regression analysis of the dependence of the displacement velocities under the protected objects on the reduced distance to the industrial facilities of the “Elginsky” complex was also performed. Reducing the impact of blasting is an important aspect in minerals development. One of the methods to achieve this goal is short-term alternate blasting of wells, with the use of electronic detonators. This method allows flexible and precise programming of the deceleration time of the explosive reaction, which in its turn reduces the seismic impact on the environment. One of the key advantages of this approach is the ability to minimize seismic impact indicators, improve the quality of crushing rock mass.

Keywords: Drilling and blasting, fracturing, physical properties of rocks, permafrost, electronic initiation system, seismic effect, short-delayed multi-row detonation, electronic detonator.
For citation:

Malinin Yu. A., Grib N. N. Improving the efficiency and safety of drilling and blasting operations at the elga coal deposit. MIAB. Mining Inf. Anal. Bull. 2023;(12-1):100—115. [In Russ]. DOI: 10.25018/0236_1493_2023_122_0_100.

Acknowledgements:
Issue number: 12
Year: 2023
Page number: 100-115
ISBN: 0236-1493
UDK: 550.348, 550.834
DOI: 10.25018/0236_1493_2023_122_0_100
Article receipt date: 05.10.2023
Date of review receipt: 26.10.2023
Date of the editorial board′s decision on the article′s publishing: 10.11.2023
About authors:

Malinin Yu. A., senior lecturer, Nerungri Тechnical Institute (branch) of M. K. Ammosov North-Eastern Federal University, Nerungri, 678960, Russia, е-mail: alkor.05@mail.ru, ORCID: https://orcid.org/0000−0002−7473−2808;
Grib N. N., Dr. Sci. (Eng.), Professor, Deputy. director of scientific work, Nerungri Тechnical Institute (branch) of M. K. Ammosov North-Eastern Federal University, Nerungri, 678960, Russia, е-mail: grib-n-n@yandex.ru, orcid.org/0000−0002−3818−9473.

 

For contacts:

Malinin Yu. A., е-mail: alkor.05@mail.ru.

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