Authors: V.L. Yakovlev, S.N. Zharikov, A.S. Regotunov, V.A. Kutuev

Title of the article: Research of new techniques for taking into account the properties and structure of the massif during its disintegration by drilling and blasting in the dynamics of the development of complex-structured deposits

Year: 2024, Issue: 4, Pages: 86-96

Branch of knowledge: 2.8.6. Geomechanics, destruction of rocks by explosion, mine aerogasdynamics and mining thermophysics

Index UDK: 622.235

DOI: 10.26730/1999-4125-2024-4-86-96

Abstract: The dynamics of the development of mining systems is accompanied by an increase in the depth of field development. There are spatial restrictions on the production of drilling and blasting operations that affect an increase in their cost, an increase in explosive consumption, increased safety requirements, dynamic effects on adjacent areas of the quarry space and protected objects, and the quality of crushing rock mass. Accordingly, an urgent issue is the adaptation of the parameters of drilling and blasting technology to changing conditions, taking into account the dynamics of mining operations with depth. It is necessary to continue research on the phenomena and processes affecting the choice of parameters of drilling and blasting operations in confined conditions. The following are subject to comprehensive study: energy and detonation characteristics of charges of emulsion explosives, taking into account the loading density, the parameters of the process of ball drilling, the study of the seismic effect of the explosion. At the same time, it is advisable to develop a method for express obtaining information about rocks in their natural occurrence in the process of spherical drilling of blast wells, since operational information about the strength properties of local massifs allows destruction to be carried out in many ways predictably, most effectively and safely. A method has been developed for measuring the energy and detonation characteristics of explosives and express determination of the strength properties of rocks for the complex adaptation of drilling and blasting parameters to changing mining and geological conditions. Using the example of rocks from the Bazhenov and Dzhetygarinsky deposits, a regression relationship was established between the average speed of the well drilling and the coefficient of variation of the bit rotation moment, and coefficients of soil conditions and indicators of the degree of attenuation of seismic vibrations were obtained to determine the level of seismic impact on protected areas of the sides of the quarry with different directions of initiation of borehole explosive charges. The methodological foundations of a comprehensive methodology for adapting the parameters of drilling and blasting operations to changing conditions have been developed.

Key words: rock destruction wave processes adaptation of drilling and blasting parameters parameters of the process of ball drilling rational explosive rebound in the contour zone of the quarry

Receiving date: 22.05.2024

Approval date: 25.07.2024

Publication date: 26.09.2024

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