Analysis of displacements as function of drilling and blasting parameters and geological characteristics of rocks

The article analyzes displacements in rock mass and orebody during mass blasting in open pit mining in different geological conditions and at different drilling and blasting parameters. The analysis of displacements took into account the drilling and blasting designs, and the geological and geomechanical properties of rocks. The estimates of horizontal displacements in rock mass used the displacement data from different type markers. The dependences of horizontal displacements of rock mass on drilling and blasting parameters and geological characteristics of blasting blocks are presented. It is found that the displacement dependence on the drilling and blasting parameters is unpredictable and irregular, which makes it impossible to provide reliable prediction of displacements in rock mass only using the mentioned parameters. The geological–geomechanical block model of a mine revealed additional dependence of horizontal displacements on the density and joint characteristics of rock mass. The generalized results exhibit that rock mass displacements partly depend both on drilling and blasting parameters and on geological characteristics of rocks. The connection between rock mass displacements and the listed parameters is regularly traceable, which allows a hypothesis that it is highly probable to build a predictive model of displacements in rock mass and ore bodies using the integrated parameters and highly professional approaches.

Nekrasov A. V., Cheskidov V. V., Nekrasova A. Y. Analysis of displacements as function of drilling and blasting parameters and geological characteristics of rocks. MIAB. Mining Inf. Anal. Bull. 2025;(1):80-99. [In Russ]. DOI: 10.25018/0236_1493_2025_1_0_80.

A.V. Nekrasov¹, Graduate Student, e-mail: m2311920@edu.misis.ru, ORCID ID: 0009-0007-9614-6440,
V.V. Cheskidov¹, Cand. Sci. (Eng.), Assistant Professor, e-mail: vcheskidov@misis.ru, ORCID ID: 0000-0001-6165-5439, Scopus Author ID: 57197715574,
A.Y. Nekrasova¹, Graduate Student, e-mail: m2400143@edu.misis.ru, ORCID ID: 0009-0003-5459-7316,
¹ NUST MISIS, 119049, Moscow, Russia.

A.V. Nekrasov, e-mail: m2311920@edu.misis.ru.

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