On the stability of the sides of the Dzhetygarinsky field quarry during blasting operations in the contiguous zone

During the development of the Dzhetygarinsky chrysotile-asbestos deposit (Republic of Kazakhstan), a problem arose in some areas of the side of the quarry to ensure the stability of the redeemable ledges. The article discusses the main factors leading to the weakening of the stability of the array in local areas. The analysis of scientific research in the field of geomechanics, hydrogeology and drilling and blasting operations carried out by specialists of the Institute of Mining of the Ural Branch of the Russian Academy of Sciences at the Dzhetygarinsky field is carried out. A set of studies of seismic stability of a mountain massif is presented step by step, according to the assessment of the dynamic impact of technological explosions, including the establishment of theoretical seismic stability of quarry rocks, experimental measurements of the seismic effect of explosions, and determination of the radii of the explosion zones, justification of the parameters of contour blasting and testing of contiguous blocks in depending on the strength characteristics of rocks. The coefficients of ground conditions and indicators of the degree of attenuation of seismic vibrations have been clarified in order to make a more accurate forecast of the level of seismic impact on protected areas of the sides of the quarry when designing technological explosions with the direction of initiation both to the rear and from the side. The procedure for determining the seismic and explosive impact is justified, taking into account the direction of initiation of borehole charges.

Keywords: Dzhetygarinsky deposit, stability of the sides of the quarry, the limiting contour of the quarry, physical and mechanical properties, structural structure of the array, seismic effect of the explosion, vibrations velocity ground, blasting operations.
For citation:

Kutuev V. A., Vasilyeva L. A., Zharikov S. N. On the stability of the sides of the Dzhetygarinsky field quarry during blasting operations in the contiguous zone. MIAB. Mining Inf. Anal. Bull. 2024;(7-1):25-36. [In Russ]. DOI: 10.25018/0236_1493_2024_71_0_25.

Acknowledgements:

The research was carried out within the framework of State Assignment No. 075-00412-22 PR, topics 1 (2022–2024): Methodological foundations of the strategy for the integrated development of reserves of solid minerals in the dynamics of the development of mining systems (FUWE-2022-0005), reg. No.1021062010531-8-1.5.1.

Issue number: 7
Year: 2024
Page number: 25-36
ISBN: 0236-1493
UDK: 622.023:622.235:534-16
DOI: 10.25018/0236_1493_2024_71_0_25
Article receipt date: 07.03.2024
Date of review receipt: 20.04.2024
Date of the editorial board′s decision on the article′s publishing: 10.06.2024
About authors:

V.A. Kutuev1, Researcher, e-mail: 9634447996@mail.ru, ORCID ID: 0000-0002-8423-0246,
L.A. Vasilyeva1, Junior Researcher, e-mail: lavasileva@igduran.r,u
S.N. Zharikov1, Cand. Sci. (Eng.), Head of Laboratory, Leading Researcher, e-mail: 333vista@mail.ru, ORCID ID: 0000-0002-0322-9973,
1 Institute of Mining of the Ural Branch of the Russian Academy of Sciences, 620075, Ekaterinburg, Russia.

 

For contacts:

V.A. Kutuev, e-mail: 9634447996@mail.ru.

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